Effectiveness Assessment of Vaccinating Schoolchildren Against Influenza

"Influenza vaccine: schoolchidren in the experimental group received IM administered:~* From 6 to 9 years of age - 2 doses (0.5ml each) of the tri-valent innactivated influenza vaccine - Southern Hemisphere formulation, 2009 - one month apart.~* 9 years of age and older: one dose (0.5ml) of the tri-valent innactivated influenza vaccine - Southern Hemisphere formulation, 2009 - one month apart."

"Schoolchildren from 6 to 8 years of age:~\- One dose (0.5ml), IM administered, of Meningococcal C conjugate vaccine, and one dose (0.5ml), one month later, of varicella vaccine, IM administered."