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Table 2 Prevalence rates of neutralizing antibodies in a rural population from Minas Gerais State, Brazil

From: Seroprevalence of Orthopoxvirus in rural Brazil: insights into anti-OPV immunity status and its implications for emergent zoonotic OPV

Interviewed Prevalence rate (CI 95 %)
Overall 30.8 (25.3 - 36.9)
Vaccinateda (>35 years old) 53.1 (44.5 - 61.7)
Non-vaccinateda (≤35 years old) 6.1 (3.0 - 12.1)
Presence of vaccine takeb  
Yes 57.1 (46.0 - 67.6)
No 18.4 (13.2 - 25.6)
  1. a: Vaccinated and non-vaccinated individuals were determined according to their age, which correspond that >35 years old participated of smallpox eradication campaign
  2. b: The presence of vaccine take were determined by examination on left arm of each individual