2009 H1N1 flu viruses are expected to circulate throughout 2010, including during the Southern Hemisphere flu season. Any traveler who wants to reduce the risk of getting sick with 2009 H1N1 should get the 2009 H1N1 vaccine. It is best to get the vaccine at least 2 weeks before the start of your trip.

Two people with compromised immune systems who became ill with 2009 H1N1 influenza developed drug-resistant strains of virus after less than two weeks on therapy, report doctors from the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health.

As of 21 March 2010, worldwide more than 213 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including over 16,931 deaths.

As of 21 March 2010, worldwide more than 213 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including over 16,931 deaths.