Case Investigation of Pertussis in Ban Kogmao, Tachang Sub-district, Bangklam District, Songkhla Province, Thailand, 7 - 26 June 2014

Abstract

The case investigation of pertussis was conducted by Bangklam and Padangbezar Surveillance and Rapid Response Teams (SRRT) on June 2014. The objectives aimed to confirmed diagnosis and outbreak, to describe the magnitude of problem, to identify the source of pertussis and to implement control and prevention measures. The confirmed pertussis case was an infant who was born on 16 April 2014 at Hadyai Hospital without complication. His onset was on 2 May 2014 and he was brought to Had Yai Hospital on 5 May 2014. He was admittedwith atypical pneumonia diagnosis. His nasopharyngeal swab revealed positive PCR of Bordetella pertussis. He received Azitromycin antibiotic and full recovery. The investigation team collected the nasophryngeal swab in all household members and revealed positive PCR of B. pertussis from grandmother and uncle. But they were asymptomatic. The 14 infants and 1 suspected case in the community revealed all negative PCR of B. pertussis. The DPT coverage in the community was 92%. The case might be infected from two possibilities. First, the infant might be infected during post-delivery and admitted at Had Yai Hospital and then transmitted to family member or second, the infant might be infected from care takers in the family. After follow up 3 weeks in the community, there was no additional case. We recommended all children in the community must go to vaccination in case of miss schedule.