Persistencia de signos y síntomas a los 6 meses posinfección por chikungunya en pacientes de un hospital público en Paraguay

Introducción: El virus chikungunya (CHIKV) causa una enfermedad con manifestaciones agudas bien documentadas, pero existen pocos datos sobre la persistencia de síntomas y secuelas a largo plazo. Objetivos: Evaluar la persistencia de signos, síntomas y factores asociados en pacientes con infección por CHIKV en un seguimiento de 6 meses posinfección. Materiales y métodos: Estudio de cohorte ambispectivo que incluyó casos confirmados de CHIKV notificados en abril de 2023 en Coronel Oviedo, Paraguay. Se realizaron entrevistas al mes, a los tres meses y a los 6 meses posinfección. Se analizaron características demográficas, comorbilidades, manifestaciones reumáticas y sintomáticas. Resultados: Ingresaron 333 participantes, completando seguimiento a 6 meses 170 pacientes. A los 6 meses persistieron: dolor de espalda (61.2%), artritis (57.1%), cefalea (54.1%), fatiga (51.2%), mialgia (49.4%), debilidad (47.6%), depresión (45.9%) y artralgia (45.9%). La persistencia de artritis (OR 7.54; p=0.008) y mialgia (OR 3.24; p=0.031) a 6 meses fue mayor en el grupo de 36-45 años. Conclusiones: Alta persistencia de síntomas musculoesqueléticos y fatiga hasta 6 meses posinfección, con tendencia decreciente, pero exacerbación de depresión. Edad entre 36-45 años asociada a mayor persistencia. Se requieren protocolos de seguimiento integral, investigar mecanismos fisiopatológicos y fortalecer prevención, dado el impacto individual y socioeconómico de la enfermedad.

Introduction: Chikungunya virus (CHIKV) causes a disease with well-documented acute manifestations, but there is limited data on the persistence of symptoms and long-term sequelae. Objectives: To evaluate the persistence of signs, symptoms, and associated factors in patients with CHIKV infection during a 6-month post-infection follow-up. Material and Methods: An ambispective cohort study that included confirmed cases of CHIKV reported in April 2023 in Coronel Oviedo, Paraguay. Interviews were conducted at 1, 3 and 6 months post-infection. Demographic characteristics, comorbidities, rheumatic, and symptomatic manifestations were analyzed. Results: 333 participants were enrolled, with 170 patients completing the 6-month follow-up. At 6 months, the following symptoms persisted: back pain (61.2%), arthritis (57.1%), headache (54.1%), fatigue (51.2%), myalgia (49.4%), weakness (47.6%), depression (45.9%), and arthralgia (45.9%). The persistence of arthritis (OR 7.54, p=0.008) and myalgia (OR 3.24, p=0.031) at 6 months was higher in the 36-45 age group. Conclusions: High persistence of musculoskeletal symptoms and fatigue up to 6 months post-infection, with a decreasing trend but exacerbation of depression. Age between 36-45 years was associated with greater persistence. Comprehensive follow-up protocols, investigation of pathophysiological mechanisms, and strengthening prevention are required, given the individual and socioeconomic impact of the disease.

Seguimiento de niños con diagnóstico de asma grave antes y durante la pandemia por COVID-19 / Follow-up of children diagnosed with severe asthma before and during the COVID-19 pandemic

En la pandemia por COVID-19 se exploraron estrategias de atención para garantizar el seguimiento de niños con asma grave. Estudio prospectivo, observacional, comparativo. Se incluyeron pacientes del programa de asma grave de un hospital pediátrico de tercer nivel (n 74). Se evaluó el grado de control, exacerbaciones y hospitalizaciones durante un período presencial (PP), marzo 2019-2020, y uno virtual (PV), abril 2020-2021. En el PP, se incluyeron 74 pacientes vs. 68 (92 %) del PV. En el PP, el 68 % (46) de los pacientes presentaron exacerbaciones vs. el 46 % (31) de los pacientes en el PV (p 0,003). En el PP, se registraron 135 exacerbaciones totales vs. 79 en el PV (p 0,001); hubo una reducción del 41 %. En el PP, el 47 % (32) de los pacientes tuvieron exacerbaciones graves vs. el 32 % (22) de los pacientes en el PV (p 0,048). Hubo 91 exacerbaciones graves en el PP vs. 49 en el PV (p 0,029), reducción del 46 %. No hubo diferencias en las hospitalizaciones (PP 10, PV 6; p 0,9). La telemedicina fue efectiva para el seguimiento de pacientes con asma grave

During the COVID-19 pandemic, health care strategies were explored to ensure the follow-up of children with severe asthma. This was a prospective, observational, and comparative study. Patients in the severe asthma program of a tertiary care children's hospital were included (n: 74). The extent of control, exacerbations, and hospitalizations during an in-person period (IPP) (March 2019­2020) and an online period (OP) (April 2020­2021) was assessed. A total of 74 patients were enrolled in the IPP compared to 68 (92%) in the OP. During the IPP, 68% (46) of patients had exacerbations versus 46% (31) during the OP (p = 0.003). During the IPP, 135 total exacerbations were recorded compared to 79 during the OP (p = 0.001); this accounted for a 41% reduction. During the IPP, 47% (32) of patients had severe exacerbations versus 32% (22) during the OP (p = 0.048). A total of 91 severe exacerbations were recorded during the IPP compared to 49 during the OP (p = 0.029); the reduction was 46%. No differences were observed in terms of hospitalization (IPP: 10, OP: 6; p = 0,9). Telemedicine was effective for the follow-up of patients with severe asthma.

Seguimiento Funcional hasta Seis Meses después de Sobrevivir a Cuidados Intensivos: Lecciones aprendidas de un Estudio Chileno Multicéntrico / Functional follow-up six months after surviving intensive care: lessons learned from a Chilean multicenter study

Introducción. Las tasas de retención en los estudios de seguimiento oscilan entre el 32 y 100%, demostrando el desafío que implica realizar estudios longitudinales de sobrevivientes de la unidad de cuidados intensivos (UCI). Objetivo. Identificar las estrategias implementadas y lecciones aprendidas en un estudio prospectivo multicéntrico de seguimiento de sobrevivientes de la UCI durante la pandemia. Métodos. Estudio post-hoc de las lecciones aprendidas mediante encuestas y entrevistas dirigidas a explorar la experiencia de los investigadores y coordinadores del estudio IMPACCT COVID-19, realizado en siete centros chilenos entre octubre 2020 y abril 2021 evaluando el síndrome post-cuidados intensivos de sobrevivientes hasta seis meses después. Resultados. Identificamos ocho lecciones: 1) selección de instrumentos de medición, 2) identificación de centros participantes, 3) aprobación del estudio, 4) financiamiento, 5) capacitación de evaluadores, 6) coordinación/aseguramiento de calidad, 7) reclutamiento y 8) seguimiento de pacientes. Incluso durante el primer año de pandemia, reclutamos 252 pacientes a una tasa de 1,4 pacientes/día con una retención del 48% a los 6 meses de seguimiento. El uso de redes académicas existentes y las estrategias de comunicación entre investigadores, coordinadores y evaluadores fueron aspectos positivos; mientras que la fidelización con evaluadores al egreso de la UCI y con pacientes durante el seguimiento son aspectos que deberían considerarse en futuros estudios. Conclusiones. Se evaluaron más de 250 pacientes en seis meses durante la pandemia, con tasas de retención post UCI acorde a la literatura. Futuros estudios debiesen optimizar los procesos de medición y de seguimiento para minimizar la pérdida de pacientes.

Background. Retention rates of follow-up studies range from 32 to 100%, demonstrating the challenge to conduct longitudinal studies of intensive care unit (ICU) survivors. Objective. To identify the strategies implemented and lessons learned in a multicenter prospective follow-up study of ICU survivors during pandemic times. Methods. Post-hoc study of lessons learned through surveys and interviews aimed at exploring the experience of the researchers and coordinators of the IMPACCT COVID-19 study. The original study was performed in seven Chilean sites between October 2020 and April 2021 evaluating the post-intensive care syndrome of survivors up to six-month follow-up. Results. We identified eight lessons: 1) selection of measurement instruments, 2) identification of participating sites, 3) Study approval, 4) funding, 5) evaluators training, 6) coordination/quality assurance, 7) recruitment, and 8) patient follow-up. Even during the first year of the pandemic, we recruited 252 patients at a rate of 1.4 patients/day with a retention rate of 48% at 6 months of follow-up. The use of existing academic networks and communication strategies between researchers, coordinators and evaluators were positive aspects; while evaluators fidelity at ICU discharge and patient engagement during follow-up are aspects should be considered. Conclusions. More than 250 patients were evaluated in six months during the pandemic, with post-ICU retention rates consistent with the literature. Future studies should optimize measurement and monitoring processes to minimize patient atrition.

Mid-and long-term efficacy of modified Colonna arthroplasty in the treatment of unilateral dislocation type of juvenile developmental dysplasia of the hip / 中华骨科杂志

Objective:To investigate the mid-and long-term clinical efficacy of modified Colonna arthroplasty in the treatment of unilateral dislocation type developmental dysplasia of hip (DDH) in adolescents.Methods:A total of 28 adolescent DDH patients with unilateral dislocation who underwent modified Colonna capsular arthroplasty from January 2016 to January 2018 in the 920th Hospital of Joint Logistics Support Force of People's Liberation Army were retrospectively analyzed. There were 4 males and 24 females, aged 16.5±5.0 years (range, 10-25 years). The mean body mass index was 21.2±1.1 kg/m 2 (range, 18.7-24.1 kg/m 2). According to DDH classification, 10 cases were Tonnis type III and 18 cases were Tonnis type IV. The postoperative lateral center-edge angle, acetabular coverage, femoral anteversion angle and leg length discrepancy were measured. The operation time, intraoperative blood loss, visual analogue scale (VAS) of hip pain, Harris hip score (HHS) and congenital dislocation of the hip score were recorded. Results:All patients successfully completed the operation and were followed up for 72.1±5.2 months (range, 60-84 months). The operation time was 81.6±4.3 min (range, 70-90 min), the intraoperative blood loss was 177.5±12.6 ml (range, 160-200 ml), and the hospital stay was 6.8±0.7 days (range, 6-9 days). The VAS score of the hip joint was 1.8±0.6 before operation and 2.3±0.6 at the last follow-up, and the difference was not statistically significant ( t=2.845, P=0.224). The preoperative HHS score was 57.1±5.9, and it increased to 87.3±4.0 at the last follow-up, and the difference was statistically significant ( t=-22.141, P=0.001). At the last follow-up, the femoral anteversion angle was 17.0°±1.5°, which was lower than that before operation 41.6°±2.4°, with a statistically significant difference ( t=-44.868, P=0.008). The leg length discrepancy was 10.2±2.3 mm, which was lower than that before operation (26.4±6.1 mm), with a statistically significant difference ( t=-12.892, P<0.001). The lateral center-edge angle was 28° (26°, 30°), and the acetabular coverage rate was 78% (76%, 79%). The curative effect evaluation standard score of congenital dislocation of the hip was 24 (16.7, 25.7) points, including 7 excellent cases, 14 good cases, 4 fair cases, and 3 poor cases. The excellent and good rate was 75% (21/28). Conclusion:The modified Colonna arthroplasty for the treatment of unilateral dislocation DDH in adolescents has good mid-and long-term hip function recovery and radiographic improvement.

Mid-long term distal femur allograft prosthetic composite reconstruction for short proximal femur segments following tumor resection / 中华骨科杂志

Objective:To investigate the mid-to-long term therapeutic effects of allogeneic bone composite prosthesis reconstruction in patients with large bone defects after the resection of distal femoral tumors.Methods:From June 2013 to December 2018, a total of 19 patients with malignant tumors of the distal femur who underwent reconstruction with allogeneic bone composite prosthesis in the Department of Bone Tumor, Shanghai General Hospital were retrospectively collected. There were 10 males and 9 females, aged 22.3±11 years (range, 11-42 years). The mean body mass index was 19.3±3.4 kg/m 2 (range, 14-27 kg/m 2). There were 18 cases of osteosarcoma and 1 case of Ewing's sarcoma. According to Ennecking staging, there were 17 cases of stage IIB and 2 cases of stage III. The intraoperative blood loss and operation time were recorded, and the prosthesis and patient survival conditions and postoperative complications were observed. The limb function was evaluated by the Musculoskeletal Tumor Society (MSTS) 93 function score. Results:All patients successfully completed the operation. The operation time was 187.3±39.8 min (range, 110-260 min), the intraoperative blood loss was 284.9±87.0 ml (range, 200-500 ml), and the blood transfusion volume was 327±213 ml (range, 100-800 ml). The remaining length of the proximal femur was 153.7±26.6 mm (range, 93-190 mm), and the length of allogeneic bone was 84.1±24.6 mm (range, 39-134 mm). Among the 19 patients, 9 patients (47%) achieved bony union with an average healing time of 16.7±4.8 months (range, 10-25 months), and 7 patients had delayed healing with an average healing time of 18.4±4.0 months (range, 15-25 months). The remaining 10 cases were nonunion between allogeneic bone and host bone. All patients were followed up for 80.7±20.2 months (range, 56-121 months). During the follow-up, 3 cases died due to pulmonary metastasis of bone tumors, and the time of death was 57 months, 63 months, and 59 months after surgery, respectively. At the last follow-up, the patient survival rate was 84% (16/19), and the MSTS 93 function score of the 16 patients was (24.3±2.4) points (range, 21-28 points), with an excellent rate of 100% (16/16). Seven patients underwent revision surgery, 3 cases were aseptic loosening, 3 cases were prosthesis stem fracture at the junction of the allograft bone and the host bone, and 1 case was periprosthetic infection, among which the patient with periprosthetic infection had poor local soft tissue conditions due to preoperative radiotherapy, and the infection was controlled after two revision surgeries. Five cases were revised with allogeneic bone composite prosthesis, and 2 cases were revised with short-stem giant prosthesis with cortical steel plate or locking nail. After revision, the remaining length of the proximal femur was 143.4±31 mm (range, 91-175 mm), and the length of the allograft bone was 92.6±26.6 mm (range, 61-123 mm). The 7 revised patients were still in follow-up. There were no cases of pulmonary infection, nerve injury, deep vein thrombosis or other complications after surgery.Conclusion:The survival period of patients after the surgery to reconstruct large bone defects following the resection of malignant tumors at the distal end of the femur using allogeneic bone composite prosthesis is satisfactory, and the limb function is good. However, the incidence of prosthesis complications is high, which can be reconstructed through revision.

Longitudinal study on anxiety and intolerance of uncertainty among Chinese college students / 中国学校卫生

Objective@#To explore the longitudinal changes and related predictive factors of anxiety and intolerance of uncertainty (IU) among Chinese college students, so as to provide theoretical reference for promoting students mental health.@*Methods@#Intolerance of Uncertainty Scale-short Form and the 7 item Generalized Anxiety Disorder Scale were administered among 5 683 students from 22 universities in Guangdong Province from September 10 to October 17, 2021 (T1, baseline survey), and from March 15 to April 22, 2023 (T2). Using paired sample t-test to analyze the changes in anxiety and IU among college students, a linear regression model was established to explore factors that can predict anxiety, IU and their changes during T1 and T2 periods.@*Results@#During the T1 period, the average scores of anxiety and IU among college students were (3.26±3.46, 34.88±7.96), while during the T2 period, they were (4.41±4.16, 36.40±8.07). During the T2 period, the levels of anxiety and IU among college students were higher than those during the T1 period ( t=19.59, 13.67, P <0.01). The linear regression results showed that age ( B = -0.02 ), moderate ( B =-0.18) and poor ( B =-0.88) mental health status, as well as online browsing of Corona Virus Disease 2019 (COVID-19) epidemic (later called as epidemic) related information for >1-<3 hours ( B =-0.30) and ≥3 hours ( B =-0.22), all of which could negatively predict changes in anxiety during T1 to T2 periods. Living in rural areas ( B =0.11) could positively predict changes in anxiety during T1 to T2 periods ( P <0.05). Moderate ( B =-0.19) and poor ( B =-0.47) mental health status, browsing epidemic related information online for >1-<3 hours ( B =-0.32) and ≥3 hours ( B =-0.33), academic performance being moderately affected by the epidemic ( B =-0.10), and personal planning being moderately affected by the epidemic ( B =-0.13) and severely affected ( B =-0.22), all of which could negatively predict changes in IU during T1 to T2 periods ( P <0.05).@*Conclusions@#Levels of anxiety and intolerance of uncertainty increases significantly after epidemic. Mental health status of college students should need long term monitoring, and students with poor mental health should need special attention.

Desfechos das inserções de dispositivos intrauterinos por enfermeiros em instituições de saúde: revisão integrativa / Outcomes of intrauterine device insertions by nurses in healthcare institutions: an integrative review

RESUMO Objetivo identificar quais os desfechos das inserções de dispositivos intrauterinos por enfermeiros em instituições de saúde. Métodos revisão integrativa realizada em oito bases de dados, com auxílio de um gerenciador de referências bibliográficas, utilizando o modelo de JBI para a análise do nível de evidência. Os dados foram organizados, categorizados e discutidos por meio de síntese descritiva. Resultados 10 estudos compuseram a amostra final, sendo dois apenas com enfermeiros e os demais com enfermeiros e médicos. Os principais desfechos avaliados foram perfuração e expulsão, sem diferenças significativas entre os profissionais que realizaram o procedimento. As taxas de sucesso, continuidade e satisfação foram semelhantes entre médicos e enfermeiros. Conclusão os desfechos das inserções de dispositivos intrauterinos por enfermeiros em instituições de saúde são similares aos realizados por médicos, com ampliação do acesso, sem aumentar as complicações relacionadas a esse método contraceptivo, contribuindo para a integralidade da assistência no campo do planejamento reprodutivo. Contribuições para a prática: os achados podem contribuir para o enfrentamento de barreiras pelos enfermeiros, servindo como subsídio para diretrizes e políticas de saúde que incentivem a inserção do dispositivo intrauterino por estes profissionais, principalmente, em contextos onde esta prática ainda não ocorre.

ABSTRACT Objective to identify the outcomes of intrauterine device insertions by nurses in healthcare institutions. Methods integrative review carried out in eight databases, with the help of a bibliographic reference manager, using the JBI model for analyzing the evidence level. The data was organized, categorized and discussed using descriptive summaries. Results 10 studies made up the final sample, two with nurses only and the others with nurses and physicians. The main outcomes assessed were perforation and expulsion, with no significant differences between the professionals who performed the procedure. Success rates, continuity and satisfaction were similar between physicians and nurses. Conclusion the outcomes of intrauterine device insertions by nurses in health institutions are similar to those carried out by physicians, with increased access, without increasing the complications related to this contraceptive method, contributing to comprehensive care in the field of reproductive planning. Contributions to practice: the findings could help nurses to tackle barriers and serve as a basis for guidelines and health policies that encourage the insertion of the intrauterine device by these professionals, especially in contexts where this practice does not yet take place.

Prognostic Impact of Residual Moderate Mitral Regurgitation Following Valve-in-Valve Transcatheter Aortic Valve Implantation

ABSTRACT Introduction: The impact of mitral regurgitation (MR) on valve-in-valve transcatheter aortic valve implantation (VIV-TAVI) in patients with failed bioprostheses remains unclear. The purpose of this study was to assess the prognostic impact of residual moderate MR following VIV-TAVI. Methods: We retrospectively analyzed 127 patients who underwent VIV-TAVI between March 2010 and November 2021. At least moderate MR was observed in 51.2% of patients before the procedure, and MR improved in 42.1% of all patients. Patients with postoperative severe MR, previous mitral valve intervention, and patients who died before postoperative echocardiography were excluded from further analyses. The remaining 114 subjects were divided into two groups according to the degree of postprocedural MR: none-mild MR (73.7%) or moderate MR (26.3%). Propensity score matching yielded 23 pairs for final comparison. Results: No significant differences were found between groups before and after matching in early results. In the matched cohort, survival probabilities at one, three, and five years were 95.7% vs. 87.0%, 85.0% vs. 64.5%, and 85.0% vs. 29.0% in the none-mild MR group vs. moderate MR-group, respectively (log-rank P=0.035). Among survivors, patients with moderate MR had worse functional status according to New York Heart Association (NYHA) class at follow-up (P=0.006). Conclusion: MR is common in patients with failed aortic bioprostheses, and improvement in MR-status was observed in over 40% of patients following VIV-TAVI. Residual moderate MR after VIV-TAVI is not associated with worse early outcomes, however, it was associated with increased mortality at five years of follow-up and worse NYHA class among survivors.

Functional status of children and adolescents with COVID-19 in a reference hospital in southern Brazil / Estado funcional de crianças e adolescentes com COVID-19 em um hospital de referência no sul do Brasil

Abstract Introduction COVID-19 could leave important consequences, including functional decline. Objective Eval-uate functional status in pediatric patients hospitalized with COVID-19 and correlate with clinical variables. Methods Prospective and retrospective longitudinal study with patients with COVID-19. Hospitalization data were collected from medical record review and post discharge data were collected by telephone contact. Functional status was evaluated by Functional Status Scale (FSS-Brazil) in three moments (hospital admission, hospi-tal discharge and after hospital discharge). Spearman test was used to correlate continuous variables and the linear model with generalized estimation equations was used to verify differences in the proportion of functional impairment occurrence (FSS-Brazil ≥ 8) at different mo-ments of the study and previous disease presence. Results It was included 232 patients, 56% male, median age of five years old. Seventy (30.2%) patients had post discharge data. The mean global score of FSS-Brazil was 7.3 at hospital admission, 6.8 at discharge hospital and 6.8 after discharge hospital. Functional status was adequate in the three different moments evaluated in 75% of the sample. The ventilatory support needed was not correlated with functional status and the length of hos-pital stay and oxygen therapy showed weak correlations with functional status. Having no previous disease reduced the risk of functional impairment by 94%. Conclusion The majority of the patients maintained adequate functional status. Absence of previous disease was a protective factor for long term functional impairment.

Resumo Introdução A COVID-19 pode deixar sequelas impor-tantes, como declínio funcional. Objetivo Avaliar a funcionalidade dos pacientes pediátricos internados com COVID-19 e correlacionar com variáveis clínicas. Métodos Estudo longitudinal retrospectivo e prospectivo, com pacientes pediátricos com COVID-19. Os dados de internação hospitalar foram coletados a partir da revisão de prontuários e os dados pós-alta através de contato telefônico. A funcionalidade foi avaliada através da Escala de Estado Funcional Pediátrica (FSS-Brasil) em três momentos (admissão, alta e pós-alta hospitalar). A correlação entre as variáveis contínuas foi avaliada pelo teste de Spearman e utilizou-se o modelo linear com equações de estimação generalizada para verificar as diferenças nas proporções de ocorrência de prejuízo funcional (FSS-Brasil ≥ 8) nos diferentes momentos do estudo e na presença de doenças prévias. Resultados Foram incluídos 232 pacientes, 56% do sexo masculino, mediana de 5 anos de idade. Foram obtidos dados de seguimento pós-alta hospitalar de 70 (30,2%) crianças. O escore global médio da FSS-Brasil foi de 7,3 na admissão, 6,8 na alta e 6,8 após a alta. A funcionalidade apresentou-se adequada nos três momentos de avalia-ção em 75% da amostra. A necessidade de suporte ven-tilatório não foi correlacionado com a funcionalidade, e o tempo de internação e oxigenoterapia apresentaram correlações fracas com a funcionalidade. A inexistência de doenças prévias reduziu em 94% o risco de prejuízo funcional. Conclusão A maioria das crianças manteve funcionalidade adequada. Não ter doenças prévias foi um fator de proteção para o prejuízo funcional em longo prazo.

Antibody Response to SARS-COV-2 Vaccination in Healthcare Workers of Uttarakhand: A Prospective Follow-up Study

Background: Countries around the world are now racing to vaccinate people against SARS-CoV-2, the virus that causes COVID-19. The Government of India also rolled out its vaccination drive from 16th January ‘2021. Aims: To estimate the antibody response of the COVID-19 vaccine in the form of SARS-COV-2 IgG antibodies in vaccinated healthcare workers. Methods: Prospective follow-up was study conducted on healthcare workers (HCWs) of a Medical college in Dehradun, Uttarakhand. Healthcare workers who have been vaccinated for COVID-19 were tested for SARS-CoV-2-IgG antibodies at regular intervals i.e at 4 weeks after the 1st dose and then again at 4 weeks after the 2nd dose. The third sample was taken 6 months after the 2nd dose. Results: A total of 302 HCWs were enrolled in the study who gave their samples for IgG antibody estimation after the Covishield vaccine. After 4 weeks of completion of both doses, 96% HCWs formed SARS-COV-2 IgG antibodies, whereas 4% didn’t. Then after 6 months of follow-up, 14% HCWs have become negative for antibodies and better immunity is seen in people who also got infected with COVID-19 during this time. Conclusion: This study concludes that the immunity gained after vaccination is waning off in around 6 months and there is a need for a booster dose, especially for people at high risk. The infection control practices still play a crucial role in the prevention of this deadly disease.