The temperature surveys were conducted during the delivery of second and third doses of
the HPV vaccine at project sites in Vietnam. Main vaccination sessions for the second
dose were held from January 12–20, followed by “mop-up” sessions (vaccinations
administered to eligible girls not present at the main vaccination session) from February
2–5 in 2009. Main vaccination sessions for the third dose were conducted from May
219, followed by mop-up sessions from June 2–6, in 2009.