Attaining the minimum target of resolution WHA 54.19 for schistosomiasis control in the Rainforest Zone of the state of Pernambuco, Northeastern Brazil

Resolution 19 of the 54th World Health Assembly (WHA-54.19) urged member nations to promote preventive measures, ensure treatment and mobilize resources for control of schistosomiasis and soil-transmitted helminthiases (STH). The minimum target is to attend 75 percent of all school-age children at risk by year 2010. The Brazilian Ministry of Health (MoH) recommends biennial surveys of whole communities and treatment of the positives through the Schistosomiasis Control Program within the Unified Health System (PCE-SUS). However, by 2004 the PCE-SUS had covered only 8.4 percent of the 1.2 million residents in the Rainforest Zone of Pernambuco (ZMP). Six of the 43 municipalities still remained unattended. Only three of the municipalities already surveyed reached coverage of 25 percent or more. At least 154 thousand children in the 7-14 years old range have to be examined (and treated if positive) within the next five years to attend the minimum target of the WHA 54.19 for the ZMP. To make this target feasible, it is suggested that from 2006 to 2010 the PCE-SUS actions should be complemented with school-based diagnosis and treatment, involving health and educational organs as well as community associations to include both children in schools and non-enrolled school-age children.

Reliability of current estimates of schistosomiasis prevalence in the Rainforest Zone of the state of Pernambuco, Northeastern Brazil

The Program for Schistosomiasis Control within the Unified Health System (PCE-SUS) was implemented by 1999 in the Rainforest Zone or "Zona da Mata" of Pernambuco (ZMP) aiming to carry out biennial stool surveys of whole populations through municipal health organs followed by treatment of the positives through the local units of the Family Health Program (PSF). Yearly reports from the Health Department of Pernambuco State (SES/PE) from 2002 to 2004 on the PCE-SUS surveys were assessed to evaluate whether the current estimates of prevalence in the municipalities of the ZMP are based on reliable samples so as to allow considerations on the real situation of schistosomiasis in that area. The surveys carried out in that period did not follow the major principles underlying sampling design, thus posing problems in both precision and validity of the estimates. Only 12 out of 43 municipalities had minimally reliable estimates: five with moderate prevalence (10-50 percent) and seven with low prevalence (< 10 percent). Surveys with appropriate sampling procedures aimed either at representative target groups (school-aged children) or communities are recommended for the ZMP and other endemic areas not only to provide reliable information on the current situation of schistosomiasis but also to plan adequate control strategies.

Relationship between BCG scar size and asthma in children?

OBJECTIVE: This case control study was conducted to evaluate any association between the BCG scar size and occurrence of asthma among children between 6-14 years of age. METHODS: Cases consisted of 90 asthmatic children. Control group included 90 non-asthmatic children from the emergency room service of the same hospital. The BCG scar was measured as the average of the transverse and longitudinal diameters. RESULTS: The results showed that asthmatic subjects have a 3.2 times greater risk exhibiting a scar diameter of less than 5mm than non- asthmatic subjects (CI 95 percent = 1.40 - 7.63 P < 0.01). CONCLUSION: It was concluded that asthmatic children and adolescents exhibited a greater frequency of an BCG scar diameter of less than 5mm than non-asthmatics. Clinical significance of this observation is uncertain.

Radiographic features of pulmonary tuberculosis in patients infected by HIV: is there an objective indicator of co-infection?

This study aimed to compare the radiographic characteristics of patients with pulmonary tuberculosis (TB) and human immunodeficiency virus (HIV) infection with those of HIV-negative patients. In all, 275 TB patients attending the outpatients clinics at the University Hospital/UFPE, were studied from January 1997 to March 1999. Thirty nine (14.2%) of them were HIV(+), with a higher frequency of males in this group (p=0.044). Seventy-five percent of the HIV(+) patients and 19% of the HIV(-) had a negative tuberculin test (PPD) (p < 0.001). The proportion of positive sputum smears in the two groups was similar. The radiological finding most strongly associated with co-infection was absence of cavitation (p < 0.001). It may therefore be concluded that the lack of cavitation in patients with pulmonary TB may be considered a useful indicator of the need to investigate HIV infection. This approach could contribute to increasing the effectiveness of local health services, by offering appropriate treatment to co-infected patients.

Este trabalho objetivou comparar características radiológicas de doentes com tuberculose (TB) pulmonar, soropositivos para o vírus da imunodeficiência humana (HIV), com aquelas de doentes HIV-. Estudou-se, prospectivamente, 275 doentes com TB pulmonar, atendidos no Hospital das Clínicas da UFPE, entre janeiro de 1997 e março de 1999. Destes, 39 (14,2%) eram HIV+, com um predomínio maior de homens neste grupo (p=0,044). setenta e cinco por cento dos doentes HIV+ e 19% dos HIV- apresentavam reação negativa ao teste tuberculínico (PPD) (p<0,001). A proporção de baciloscopias positivas nos dois grupos foi semelhante. A característica radiológica mais fortemente associada à co-infecção tuberculose pulmonar/HIV+ foi a ausência de cavidades (p<0,001). Conclui-se que, diante de doentes com TB pulmonar, a ausência de cavidades na telerradiografia de tórax constitui-se num indicador útil da necessidade de se investigar a infecção pelo HIV. Esta conduta pode contribuir para aumentar a efetividade dos serviços locais de saúde, permitindo oferecer tratamento adequado a estes doentes.

Identification of risk factors for death from tetanus in Pernambuco, Brazil: a case-control study

A case-control study was conducted to identify risk factors for death from tetanus in the State of Pernambuco, Brazil. Information was obtained from medical records of 152 cases and 152 controls, admitted to the tetanus unit in the State University Hospital, in Recife, from 1990 to 1995. Variables were grouped in three different sets. Crude and adjusted odds ratios, p-values and 95 percent confidence intervals were estimated. Variables selected in the multivariate analysis in each set were controlled for the effect of those selected in the others. All factors related to the disease progression - incubation period, time elapsed between the occurrence of the first tetanus symptom and admission, and period of onset - showed a statistically significant association with death from tetanus. Similarly, signs and/or symptoms occurring on admission or in the following 24 hours (second set): reflex spasms, neck stiffness, respiratory signs/symptoms and respiratory failure requiring artificial ventilation (third set) were associated with death from tetanus even when adjusted for the effect of the others