Timing of hepatitis B vaccination and impact of non-simultaneous vaccination with DTP vaccine following introduction of a hepatitis B birth dose in the Philippines.

Timely administration of hepatitis B vaccine beginning at birth prevents up to 95 per cent of perinatally acquired hepatitis B virus infections in infants of infected mothers. The Philippines changed its national HepB schedule in 2007 to include a dose at birth. We evaluated vaccination schedule change by reviewing infant records at selected health facilities to measure completeness and timeliness of HepB administration and frequency of recommended, simultaneous vaccination with diphtheria-tetanus-pertussis (DTP) vaccine.

Implementing a national policy for hepatitis B birth dose vaccination in Philippines: lessons for improved delivery.

Background: An estimated seven million Filipinos (10-12% of the population) are chronically infected with hepatitis B virus (HBV). Achieving high birth dose coverage with hepatitis B vaccine is critical for achieving the World Health Organization's Western Pacific Regional goal of reducing the prevalence of chronic HBV among children 5 years of age to <2% by 2012.

Methods: Seven months after the Philippines adopted a hepatitis B vaccine birth dose policy, hospitals with the highest number of deliveries were invited to participate in an assessment of implementation of the birth dose policy.

Serologic response to inactivated poliovirus vaccine: a randomized clinical trial comparing 2 vaccination schedules in Puerto Rico.

Background: The World Health Organization (WHO) recommends the discontinuation of oral poliovirus vaccine after eradication of wild poliovirus. Studies assessing inactivated poliovirus vaccine (IPV) immunogenicity in tropical countries, using the WHO Expanded Programme on Immunization (EPI) schedule, have been limited.

Methods: We conducted a randomized clinical trial in Ponce, Puerto Rico.