Efecto de la lactancia en las infecciones pediátricas frecuentes: estudio de cohorte prospectivo de cinco años / Effect of breastfeeding on common pediatric infections: a 5-year prospective cohort study

Introducción. En los estudios realizados se encontró que la duración de la lactancia tiene un efecto reductor sobre las infecciones frecuentes en los niños durante el período de lactancia. Objetivo. El objetivo de este estudio fue abordar la asociación entre la duración de la lactancia y las enfermedades infecciosas frecuentes en los niños hasta los 5 años de edad para demostrar los efectos protectores de la leche materna. Población y métodos. Se incluyeron 411 lactantes nacidos en Rize, Turquía, entre enero de 2011 y diciembre de 2011. Este estudio de cohorte, prospectivo duró cinco años; en este período, se realizaron 11 entrevistas con cada madre de los lactantes. Se dividió a los lactantes en dos grupos: amamantados durante más y menos de 12 meses, y se estudió la asociación entre la lactancia y las infecciones, como otitis media aguda, gastroenteritis aguda, infección respiratoria aguda e infección urinaria. Resultados. De los 411 nacimientos, se incluyeron 270 lactantes, 193 (71,5%) recibieron lactancia durante más de 12 meses y 77 (28,5%), durante menos de 12 meses. Los lactantes del primer grupo tuvieron menos casos de otitis media aguda y gastroenteritis aguda (n = 77; 28,52%) en comparación con los lactantes amamantados durante menos de 12 meses en el período de cinco años (p < 0,05). Conclusiones. Con este estudio se detectó que la lactancia durante más de 12 meses reduce significativamente las infecciones frecuentes durante la niñez, como la otitis media y la gastroenteritis durante los primeros cinco años de vida.

Introduction.The studies conducted revealed that breastfeeding duration has a reducing effect on common infectious diseases in the children during breastfeeding period. Objective. The aim of the present study was to address the association between breastfeeding duration and common infectious diseases in the children until 5 years of age to show long-term protective effects of the breast milk. Material and methods. The study included 411 infants who were born in Rize (Turkey) between January 2011 and December 2011. The present prospective-cohort study lasted for 5 years and 11 interviews were conducted with each mother of the infants during this period. The infants were divided into two groups as those who were breastfed more and less than 12 months and the association between breastfeeding and infections such as acute otitis media, acute gastroenteritis, acute respiratory tract infections and acute urinary system infections was investigated. Results. Of 270 infants 193 (71.5%) were breastfed longer than 12 months and 77 (28.5%) were breastfed less than 12 months. Infants in the first group had less acute otitis media and acute gastroenteritis (n= 77, 28.52%) when compared with the infants breastfed less than 12 months during 5-year period (p <0.05). Conclusion. The present study detected that breastfeeding duration longer than 12 months significantly reduces the common childhood infections such as otitis media and gastroenteritis during the first 5 years of life.

Comportamiento de la otitis media aguda / Behavior of acute otitis media

Introducción: la otitis media aguda es una complicación de las infecciones respiratorias agudas altas, frecuente en los niños menores de 5 años. Objetivos: caracterizar su comportamiento, según edad y sexo, e identificar algunos factores de riesgo en este grupo de edad. Métodos: se realizó un estudio descriptivo retrospectivo de 554 niños ingresados en el hospital Pediátrico de Centro Habana con el diagnóstico de otitis media aguda, durante los años 2006-2010. Los datos se recogieron de las historias clínicas. Resultados: la otitis media aguda fue más frecuente en el sexo masculino (58,7 por ciento) y en los menores de 1 año (53,1 por ciento) . El antecedente de bajo peso (33,9 por ciento) y la prematuridad (27,5 por ciento), la asistencia a círculos infantiles (43,5 por ciento) y el hábito de fumar de los padres (58,4 por ciento), además del antecedente de ingresos hospitalarios por otitis media en el mes previo a la aparición del episodio actual (59,0 por ciento), constituyeron los principales factores de riesgo en el presente estudio. Conclusiones: la otitis media es una causa frecuente de ingresos hospitalarios, y se identifican como principales factores de riesgo la asistencia a círculos infantiles y el tabaquismo de algunos de los padres

Introduction: acute otitis media is a complication from acute upper respiratory tract infections and is frequent in the under 5 years-old children. Objectives: to characterize the behavior by sex and age and to identify some risk factors in this age group. Methods: a retrospective and descriptive study was conducted in 554 children admitted to Centro Habana pediatric hospital and diagnosed as acute otitis media patients during the years 2006 through 2010. Data were collected from the medical histories. Results: acute otitis media was more common in boys (58.7 percent) and under one-year old infants (53.1 percent). A history of low birthweight (33.9 percent) and prematurity (27.5 percent), attending daycare centers (43.5 percent) and smoking parents (58.4 percent)in addition to a history of admissions at hospital due to otitis media a month prior to the onset of the current event (59 percent) were the main risk factors seen in this study. Conclusions: otitis media is a frequent cause of admission at hospital and the main risk factors are attending the daycare centers, and smoking parents

Otitis media aguda / Acute otitis media

We review differents topics about acute otitis media without complication. There is a frequent cause of visit to pediatric office. We showed risk factors, to consider how to prevent it. As viral infection are frequent cause there is not necessary to start antibiotics. Finally we describe complications as otitis effusion.

Se revisan diversos aspectos de la otitis media aguda no complicada, causa muy frecuente de consulta en nuestra práctica pediátrica. Se mencionan sus factores de riesgo, que constituyen los principales elementos a considerar para su prevención. Debido a la frecuente etiología viral, la conducta terapéutica actual considera en ciertas situaciones postergar el inicio del tratamiento antibiótico. Finalmente se describen sus complicaciones, siendo la más frecuente la efusión en oído medio.

Xilitol y prevención de otitis media aguda / Xylitol and acute otitis media prevention

La otitis media aguda (OMA) es una patología extraordinariamente frecuente en escolares y lactantes, siendo la primera causa de uso de antibióticos en este último grupo. Elprincipal agente involucrado es el S. pneumoniae. Se ha postulado la hipótesis de que el xilitol, un poliol presente en la corteza de abedules, podría tener efectos inhibitorios sobre ésta y otras bacterias otopatógenas en el momento en que se encuentran en la rinofaringe, lo que podría resultar efectivo a la hora de prevenir la invasión de la cavidad timpánica y por ende el desarrollo de OMA. En esta revisión se analizan los estudios realizados que respaldan el uso del xilitol como profilaxis de OMA.

Acute otitis media (AOM) is an extremely common disease in school children and infants, which is the first cause of antibiotic use in this latter group. The main agent involved is S pneumoniae. It has proposed the hypothesis thatxylitol, a polyol which is present in the bark of birch, may have inhibitory effects on this bacteria and another otopathogen at the time found in the nasopharynx, which may be effective in preventing the invasion of the tympanic cavity and thus the development of AOM. In this review, is it discussed the studies supporting the use of xylitol prophylaxisof AOM.

Frecuencia de neumococos del serotipo 19A en otitis media aguda en niños inmunocompetentes antes de la aplicación masiva de la vacuna conjugada / Incidence of 19A pneumococci in acute otitis media in immunocompetent children before the massive administration of the conjugated vaccine

La aplicación de la vacuna PCV7 en algunos países ha determinado un aumento significativo de neumococos del serotipo 19A y este hecho ha llevado a una atenuación del impacto inicial logrado en términos de prevención de enfermedades neumocócicas invasivas. Los objetivos de este trabajo fueron: (a) describir la frecuencia de los neumococos 19A, antes de la vacunación antineumocócica masiva, en niños con OMA desde la óptica parcial de un solo hospital de la ciudad de Buenos Aires, (b) estudiar su vinculación a casos de recurrencias y (c) su sensibilidad a los antimicrobianos. Se aislaron 133 neumococos, 126 de los cuales resultaron viables para poder realizar su identificación a nivel de tipo y los estudios correspondientes de sensibilidad a los antibióticos. Los serotipos más prevalentes fueron el 14 (14,3%) y el 19A (11,9%). Ocho de los 15 aislados de S. pneumoniae 19A presentaron sensibilidad disminuida a la penicilina, lo que representó el 22,2% de los neumococos no sensibles provenientes de OMA. El serotipo 19A estuvo involucrado en 3 de los 12 casos de recurrencias por S. pneumoniae. Probablemente la nueva vacuna 13-valente, la única conjugada que contiene antígenos contra el neumococo 19A, pueda impedir su incremento tanto en OMA como en enfermedades invasivas.

In several countries administration of PCV7vaccine has cau-sed a significant increase in 19A serotype pneumococci.This effect has diminished the initial impact on invasive pneumococcal infection prevention. The aims of the present study were: (a) to describe the incidence of 19A pneumococci in children with acute otitis media (AOM), beforethe massive administration of pneumococcal vaccines, fromthe scope of a single pediatric hospital in the city of Buenos Aires, (b) to study their relation to recurrences, and (c) their antimicrobial susceptibility. One hundred and thirty-three pneumococci were isolated from children with AOM; 126 of these were viable to further identify pneumococcal serotypes and determine antimicrobial susceptibility. The most prevalent serotypes were 14 (14.3%) and 19A (11.9%). Eightout of the 15 19A serotype pneumococcal isolates showed diminished susceptibility to penicillin, accounting for 22.2% of non-susceptible pneumococci from AOM. Serotype 19A was involved in 3 out of 12 cases of recurrent AOM due to S. pneumoniae. The new 13-valent vaccine, containing antibodies against 19A pneumococci, may prevent its increasing incidence rate both in AOM and in other invasive infections.

Incidence and recurrence of acute otitis media in Taiwan's pediatric population

OBJECTIVE: To report the incidence and recurrence of acute otitis media (AOM) in Taiwan's pediatric population. METHODS: Information from children (aged <= 12 years) with a diagnosis of AOM was retrieved from the 2006 National Healthcare Insurance claims database. We calculated the cumulative incidence rate and the incidence density rate of recurrent AOM within one year after the initial diagnosis in 2006. We used a multivariate logistic regression model to assess the predictors for recurrence of AOM. RESULTS: The annual incidence rate of AOM was estimated to be 64.5 cases per 1,000 children. The overall one-year cumulative incidence rate of recurrence was 33.1 percent, and the incidence density rate was 33.5 cases per 100 personyears, with the highest figure (41.2 cases per 100 person-years) noted for children aged 0-2 years. Recurrence was significantly associated with age, gender, place of treatment, and physician specialty. CONCLUSION: AOM remains a major threat to children's health in Taiwan. Male children and very young children require more aggressive preventive strategies to reduce the risk of recurrence.

Costo-efectividad de la vacunación universal antineumocócica en Uruguay / Cost-effectiveness of universal pneumococcal vaccination in Uruguay

OBJETIVO: Evaluar la relación costo-efectividad del programa de vacunación universal con la vacuna antineumocócica conjugada heptavalente (VCN7) en niños menores de 5 años en Uruguay. MÉTODOS: Se desarrolló un modelo Markov simulando una cohorte de 48 000 niños nacidos en 2007 y su evolución hasta los 76 años de edad. El caso base usó un esquema de tres dosis con una duración estimada de protección de cinco años. La presunción de eficacia y efectividad de la vacuna se realizó acorde con estudios realizados en Estados Unidos con ajuste a la prevalencia-incidencia de serotipos en Uruguay. Los resultados se expresaron como costo incremental por año de vida ganado (AVG) y por año de vida [ganado] ajustado por calidad (AVAC). RESULTADOS: Para el caso base, el costo incremental fue de US$ 7 334,6 por AVG y US$ 4 655,8 por AVAC, previniéndose 8 muertes y 4 882 casos de otitis, 56 bacteriemias-sepsis, 429 neumonías y 7 meningitis. El modelo muestra sensibilidad a variaciones en eficacia, costo de la vacuna y tasa de mortalidad por neumonía. CONCLUSIONES: El programa de vacunación universal con VCN7 en Uruguay es altamente costo-efectivo y, en consecuencia, recomendable para otros países con carga de enfermedad neumocócica y cobertura de serotipos similares a Uruguay.

OBJECTIVE: Evaluate the cost-effectiveness ratio of the program for universal vaccination with heptavalent pneumococcal conjugate vaccine (PCV7) in children under 5 years of age in Uruguay. METHODS: A Markov model was developed that simulated a cohort of 48 000 children born in 2007 and their progress to age 76. The baseline case used a regimen of three doses with estimated protection for five years. The presumption of vaccine efficacy and effectiveness was based on studies conducted in the United States with adjustment for serotype prevalence-incidence in Uruguay. The results were expressed as the incremental cost per life year gained (LYG) and quality-adjusted life year (QALY) [gained]. RESULTS: For the baseline case, the incremental cost was US $7334.60 for each LYG and US $4655.80 for each QALY. Eight deaths and 4 882 cases of otitis, 56 cases of bacteremia-sepsis, 429 cases of pneumonia, and 7 cases of meningitis were prevented. The model shows sensitivity to variations in vaccine cost, efficacy, and pneumonia-related mortality. CONCLUSIONS: The universal vaccination program with PCV7 in Uruguay is highly cost-effective. Therefore, it is recommended for other countries with burden of pneumococcal disease and serotype coverage similar to those of Uruguay.

Revisão de literatura: utilização do xilitol para a prevenção de otite média aguda / Literature review: use of xylitol for prevention of acute otitis media

Introdução: O xilitol é um carboidrato naturalmente encontrado em diversas frutas e vegetais. Estudos têm demonstrado o uso do xilitol como uma estratégia inovadora na prevenção de otite média aguda (OMA). Objetivo: Esclarecer os possíveis mecanismos de ação do xilitol sobre a inibição do crescimento de bactérias otopatogênicas e descrever estudos que contribuem para a discussão sobre a viabilidade deste carboidrato na prevenção de OMA. Método: Revisão de literatura baseado em artigos científicos selecionados por meio das bases médicas MEDLINE, Cochrane, PubMed (MeSH) e Web of Science. Resultados: Trabalhos demonstraram que o xilitol é eficaz na prevenção de OMA quando administrado em gomas de mascar cinco vezes ao dia. Porém, o carboidrato não é tão efetivo quando administrado durante infecções de vias aéreas superiores. Comentários Finais: O xilitol parece ser uma estratégia eficaz na prevenção de otite média aguda. No entanto, novos estudos são necessários para estabelecer doses, frequências e veículos ideais para a correta administração do açúcar, possibilitando sua utilização no sistema público de saúde.

Introduction: Xylitol is a sugar naturally found in various vegetables and fruits. Studies have demonstrated that the xylitol can be used as new preventive method for acute otitis media (AOM). Objective: To clarify the possible mechanisms of xylitol actions to inhibit the growth of otopathogenic bacteria and to describe researches that contribute for the discussion about the feasibility of the use of this sugar in the prevention of AOM. Method: Literature review based on scientific articles selected by means of the medical databases: MEDLINE, Cochrane, PubMed (MeSH) and Web of Science. Results: Studies have demonstrated the efficacy of xylitol to prevent the AOM, when it is administered five times a day in chewing gum. However, this sugar is not so effective in the prevention of AOM during upper airways infections. Final Comments: Xylitol seems to be an effective strategy in prevention of acute otitis media. However, new studies are necessary to establish ideal doses, frequencies and vehicles for the correct administration of the sugar, which allows for its utilization in the public health system.

Abordaje conservador de los pacientes con otitis media aguda / Conservative management of patients with acute media otitis

A partir de la descripción de un caso de otitis media aguda (OMA) infantil se discuten las principales estrategias de abordaje de estos pacientes, especialmente el punto relacionado con evidencia que avala la prescripción inmediata y/o diferida de antibióticos. Se concluye que en los pacientes de bajo riesgo -sintomatología no severa, ausencia de comorbilidades y seguimiento asegurado a las 48 horas- existe suficiente evidencia para avalar el tratamiento sintomático inicial sin prescripción de antibióticos, esperando la resolución espontánea de la enfermedad, que ocurre en más del 80 de los pacientes. Al final de este EOP, resumimos la Guía Inglesa para la prescripción de antibióticos para las infecciones autolimitadas del tracto respiratorio publicada en 2008.

O papel de novas vacinas na prevenção da otite média: [revisão] / The role of new vaccines in the prevention of otitis media: [review]

A Otite Média é uma das doenças infecciosas mais comuns da infância e a diminuição de sua incidência levaria a um grande impacto econômico e social para o mundo. Como uma das formas de prevenção temos as vacinas. As duas vacinas escolhidas para esta revisão são as vacinas antipneumocócica e antiinfluenza. Esta revisão da literatura procurou mostrar os resultados dos principais estudos sobre essas vacinas e seu papel na prevenção da otite média. A vacina antipneumocócica polissacarídea 23-valente não alterou a incidência de otite média pela ineficácia para menores de 2 anos, grupo de maior incidência dessa enfermidade. A vacina antipneumocócica heptavalente, apesar de não provocar grande queda na incidência geral de otite média, mudou o perfil de seus microorganismos causadores, diminuindo os episódios de otite média com efusão e recorrente e aumentando as otites causadas por H. influenza, M. catarrhalis e sorotipos de pneumococo ausentes da vacina heptavalente. A vacina antiinfluenza com vírus inativado mostrou-se efetiva na redução da otite média aguda nos períodos de maior incidência desse vírus. Os otorrinolaringologistas devem estar cientes do papel dessas novas vacinas já disponíveis no Brasil e seu impacto na redução da otite média, para saber orientar adequadamente os seus pacientes.

Otitis media is one of the most common infectious diseases of infancy; a reduction in its incidence would have a significant economic and social impact. Vaccines may play a role in the prevention of otitis media. This report discusses vaccines against pneumococci and influenza viruses. We reviewed the literature for results of studies examining the role of these vaccines in the prevention of otitis media. The 23-valent polysaccharide anti-pneumococcal vaccine did not modify the incidence of otitis media in children aged 2 years less, the age group with the highest incidence of otitis. The heptavalent anti-pneumococcal vaccine did not significantly reduce the incidence of otitis media overall. This vaccine did, however, reduce the number of episodes of otitis media with effusion and the number of recurrences; it also altered the profile of causative microorganisms by increasing otitis caused by different microorganisms. We found the inactivated anti-influenza virus vaccine to be effective in reducing otitis media during peak incidence periods of influenza. As these new vaccines are currently available in Brazil, otolaryngologists must be aware of their potential role and impact in the reduction of otitis media, to counsel patients appropriately.

A eficácia de exercícios para disfunção da tuba auditiva / The effectiveness of exercises for Eustachian tube dysfunction

OBJETIVO: Avaliar a eficácia de exercícios de sopro, sucção e respiração nasal, associados à limpeza nasal e manobra de Valsalva, nas disfunções da tuba auditiva e na prevenção de otite média de repetição. MÉTODOS: Participaram 22 crianças, de ambos os sexos, entre três e seis anos, que apresentavam história de otite média de repetição e, no momento do exame, curvas timpanométricas dos tipos A e C. Tais crianças foram submetidas diariamente aos procedimentos citados durante três meses. RESULTADOS: Ao final do trabalho, das 22 crianças analisadas, 18 apresentaram curvas do tipo A bilateralmente, não apresentando episódios de otite neste intervalo. CONCLUSÃO: Na amostra estudada, estes procedimentos mostraram-se eficazes na prevenção da disfunção tubária e otite média de repetição e podem ser utilizados de forma preventiva em crianças de creches.

PURPOSE: To assess the effectiveness of blowing, suction, and nasal breathing exercises, associated with nose cleaning and Valsalva's maneuver, for Eustachian tube dysfunctions and preventing recurrent otitis media. METHODS: Twenty-two children of both genders, with ages between three and six years, who had a history of recurrent otitis media and, at the moment of the exam, types A and C tympanometric curves participated in the study. The subjects were submitted daily to the above-mentioned procedures for 3 months. RESULTS: At the end of the study, the last immitance audiometry of the 22 analyzed children showed that 18 of them had bilateral type A curves and no otitis episodes during this interval. CONCLUSION: In the studied sample, these procedures proved to be effective for preventing tube dysfunction and recurrent otitis media, and may be used preventively in children at day care centers.

Role of respiratory viruses in the etiopathogenesis of acute otitis media. How could be avoided?

Acute otitis media is one of the most common infection among children and although the treatment of it is directed towards the elimination of the bacteria from the middle ear space, viruses may also play an important etiologic role in this disease process [Mein, et al., 1979]. So, the aim of this study was to evaluate the prevalence of various respiratory viruses in middle ear effusion [MEE] and nasopharyngeal specimen in children with recurrent acute otitis media [AOM] who had failed to improve after antimicrobial therapy and to determine the incidence of respiratory syncytial virus [RSV] as one of the most common respiratory viruses in AOM. Middle ear effusion [MEE]samples collected at the time of tympanostomy tube placement from 54 children with recurrent AOM were subjected to reverse transecriptase polymerase chain reaction [RT-PCR] to detect the presence of RSV genomic sequences. Also MEE and nasopharyngeal specimens were subjected to viral and bacterial cultures to detect viral antigens. The viral cause of infections was also assessed by serologic studies of serum samples obtained during the acute illness and convalescence. Viral infection was detected in 43 out of 54 children [79.6%], RSV was isolated from 57.1% of patients by viral culture and antigen detection and from 81.5% by RT-PCR. So, we can conclude that viral infection particularly RSV either alone or concurrent with bacteria is present with large percentage of children with recurrent AOM than previously suspected and PCR has proved to be more sensitive and specific than viral cultures and immunoassays in the detection of viruses in specimen. This would be helpful in guiding the use of preventive measures such as RSV vaccine

Systematic literature review of modifiable risk factors for recurrent acute otitis media in childhood

OBJECTIVE: Review evidence about modifiable risk factors for recurrent acute otitis media.SOURCE OF DATA: MEDLINE with no language restriction, from January 1966 to July 2005, using descriptors "acute otitis media/risk factors". Two hundred and fifty-seven articles were obtained. These included randomized clinical trials, cohorts, case-control and cross-sectional studies that contained analyses of modifiable risk factors for the development of recurrent acute otitis media as the main objective and with samples of individuals up to the age of 18 years. Except when relevant, the following were excluded: non-systematic reviews, reports of cases, series of cases, and medical society guidelines. SUMMARY OF DATA: Nine risk factors linked to the host and eight linked to the environment were identified. Of the first group, allergy, craniofacial abnormalities, gastroesophageal reflux and the presence of adenoids were classified as modifiable. In the second category, upper airway infections, day care center attendance, presence of siblings/family size, passive smoking, breastfeeding and use of pacifiers were included. Afterwards, the risk factors were classified in accordance with levels of evidence. CONCLUSIONS: The risk factors established for recurrent acute otitis media and capable of being modified were the use of pacifiers and care in daycare centers. The probable risk factors were privation of mother's milk, presence of siblings, craniofacial abnormalities, passive smoking and presence of adenoids. No modifiable factor was classified as unlikely. Among those that need further study are allergy, gastroesophageal reflux and passive smoking during gestation.

Actualización en el manejo médico de la otitis media con efusión y la otitis media aguda / Update on the medical management of the otitis media with effusion and the acute otitis media

La otitis media con efusión y la otitis media aguda son dos patologías frecuentes en la población pediátrica. Existen diversas medidas costo-fectivas para su manejo que permiten optimizar los resultados. Si bien muchas de estas conductas se practican diariamente, la evidencia en torno a ello es escasa y muchas veces débil. Nuevas áreas de investigación sugieren que el screening es una medida efectiva, permitiendo identificar a sujetos de mayor riesgo. El uso de nuevas vacunas no esta recomendado de manera rutinaria.

Estudo clínico-imunológico da eficácia de timomodulina (Leucogen©) na otite média aguda recorrente e na amigdalite de repetição / Assessment of efficacy and safety of thymomodulin (Leucogen©) in the prevention of recurrent otitis media and recurrent tonsillitis

Os autores realizaram estudo em 35 crianças portadoras de otite média aguda recorrente e amigdalite de repetiçäo em um estudo duplo-cego com timomodulina e placebo. As crianças tratadas com timomodulina© receberam 4mg/kg/dia do medicamento diariamente durante três meses. Foi realizado controle bioquímico antes do tratamento e com cinco meses e nove meses após o término do tratamento. Além da avaliaçäo clínica foram realizados os seguintes exames: hemograma, TGO, TGP dosagem de IgA, IgG, IgM e IgE antes do início do tratamento e nos controles. Os resultados evidenciaram tendência à diminuiçäo do número de infecçöes e o número de ciclos de antibióticos, em relaçäo a informaçäo do último ano (pré-tratamento), principalmente no grupo tratado com timomodulina, assim como tendência ao aumento do IgA e IgG após tratamento com timomodulina, o que näo ocorreu no grupo placebo. Os exames laboratoriais, contagem de eritrócitos, de hematócrito, hemoglobina, leucócitos e transaminases (TGO e TGP) näo mostraram diferenças entre os grupos, nem alteraçöes 12 meses após o início da medicaçäo, evidenciando a ausência total de toxicidade da timomodulina. Houve apenas um efeito colateral com o uso de timomodulina (náusea e vômito) numa criança com amigdalite purulenta que tomou cefalexina concomitantemente