The First Rotavirus Vaccine and Intussusception: Epidemiological Studies and Policy Decisions

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Abstract
The distribution of pneumococcal serotypes in Brazil was analyzed by age group and clinical diagnosis, using data obtained during 20 years of national surveillance. Serotypes 1 and 5 remained among the main serotypes in all age groups, increasing in frequency with age. Serotype 14 was prevalent among children, whereas serotypes 3 and 4 were most prevalent among the adult population. The potential impact of the 7- and 9-valent conjugate vaccines on children up to age 5 years with severe pneumococcal diseases was 58.2% and 73%, respectively; the highest coverage of the 7-valent vaccine for pneumonia was achieved for children aged 7 months to 2 years (70%), whereas, for meningitis, it was observed for children aged 7 months to 5 years (58.6%). The use of conjugate vaccine may be of potential benefit by reducing the childhood sequelae and mortality of pneumococcal infection in Brazil

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