Up to 3.4 million doses of vaccines against H1N1, H3N2 and Type B influenza have been made available, he said. The vaccines need to be used up by July 31 and provide immunity for a year.
The at-risk groups are medical personnel, people aged 65 and above, women who are more than four months into a pregnancy, children between the ages of six months and two years, and people suffering from chronic disease.