According to a report released on Jan 15 on Centers for Disease Control and Prevention website, as of Jan 2, twenty percent of the US population (61 million people) have received the swine flu vaccine to prevent H1N1.

In July 2009, the Advisory Committee on Immunization Practices recommended the swine flu vaccine available to the initial target groups, which consisted of about 160 million persons. Additionally, priority groups peopled by 42 million were targeted.

Those vaccinated included 27.9 percent of persons in the initial target group, 37.5 percent of those in the priority groups and 29.4 percent of children aged 6 months to 18 years.