S. Nandi et al., Group A streptococcal sore throat in a periurban population of northern India: a one-year prospective study, B WHO, 79(6), 2001, pp. 528-533
Citations number
21
Categorie Soggetti
Envirnomentale Medicine & Public Health","Medical Research General Topics
Objective To estimate the incidence and risk factors of group A streptococc
us (GAS) sore throat among school-aged children living in a periurban slum
area of Chandigarh, North India.
Methods A total of 536 children aged 5-15 years from 261 families identifie
d by a systematic random selection method were enrolled in the study. Episo
des of sore throat were recorded through fortnightly home visits over a one
-year period. The local vernacular (Hindi) terms gala kharab (bad throat) a
nd khansijukam (cough and cold) were used to identify symptoms of sore thro
at, and throat swab specimens were collected from children who had these sy
mptoms on the day of the home visit. Bacterial culture was carried out and
the isolation of GAS was confirmed using group-A-specific antiserum.
Findings The incidences of sore throat and GAS sore throat were, respective
ly, 7.05 and 0.95 episodes per child-year. The incidence was higher in the
following situations: among Ii-year-olds, during the winter (November to Ja
nuary) and rainy (August) months (a bimodal peak), among children living in
houses where there was no separate room for the kitchen, and in homes that
included a tobacco smoker.
Conclusion The results show that the incidence of GAS sore throat was relat
ed to age, season, and indoor air pollution.