1. Estimating population immunity to poliovirus in Jordan's high-risk areas.
- Author
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Farag NH, Wannemuehler K, Weldon W, Arbaji A, Belbaisi A, Khuri-Bulos N, Ehrhardt D, Surour MR, ElhajQasem NS, and Al-Abdallat MM
- Subjects
- Adolescent, Adult, Child, Humans, Infant, Jordan epidemiology, Middle Aged, Poliovirus Vaccine, Oral, Seroepidemiologic Studies, Syria epidemiology, Young Adult, Poliomyelitis epidemiology, Poliomyelitis prevention & control, Poliovirus
- Abstract
A community-based serosurvey was conducted among children ages 6-59 to assess population immunity in Jordan's high-risk areas following the Middle East polio outbreak response. The survey was a two-stage cluster-quota sample with high risk areas as the primary sampling units. High-risk areas included border and hard-to-reach areas, and areas with a high proportion of refugees, mobile communities and/or low coverage during previous immunization campaigns. Population immunity to poliovirus was high overall. In high-risk areas, Type 1 seroprevalence = 98% (95% CI = 96, 99), Type 2 = 98% (95% CI = 96, 99) and Type 3 = 96% (95% CI = 94, 98). Seroprevalence was higher in the refugee camps: Type 1 seroprevalence = 99.6% (95% CI = 97.9, 100); Type 2: 99.6% (95% CI = 97.9, 99.9), and Type 3: 100% (95% CI = 100,100). The vigilance that the Jordan Ministry of Health has placed on locating and vaccinating high-risk populations has been successful in maintaining high population immunity and averting polio outbreaks despite the influx of refugees from Syria.
- Published
- 2020
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