TY - JOUR AU - Baptista, Paulo N. AU - Magalhães, Vera S. AU - Rodrigues, Laura C. PY - 2007 DA - 2007/05/22 TI - Children with pertussis inform the investigation of other pertussis cases among contacts JO - BMC Pediatrics SP - 21 VL - 7 IS - 1 AB - The number of reported pertussis has increased in the last two decades. However, many cases of pertussis may be underreported or not diagnosed. The World Health Organization estimates that pertussis causes 200.000 – 400.000 deaths each year, most deaths are in infants and in developing countries. Infants with pertussis can indicate an undetected source cases in the community. SN - 1471-2431 UR - https://doi.org/10.1186/1471-2431-7-21 DO - 10.1186/1471-2431-7-21 ID - Baptista2007 ER -