2009 swine flu pandemic in Costa Rica

In March and April 2009, an outbreak of a new strain of flu (also known as influenza), popularly known as swine flu, was discovered to have infected several people in Mexico and the states of California and Texas in the United States. On April 28 Costa Rica became the first Central American country to report the outbreak of the virus, with a confirmed infection. As of November 4 the Costa Rican Ministry of Health had 1,596 confirmed cases, 1,275 pending cases, 8,000 already discarded, and 38 deaths.

On July 31, local authorities announced that the country was selected among the sample countries that will be part of the test of the vaccine developed by Swiss pharmaceutical Novartis. The local sample will include 784 Costa Ricans ages 3 to 64. Besides Costa Rica, this vaccine prototype will be tested also in Mexico and the United States.

On August 11, it was confirmed that Costa Rica's president, Óscar Arias Sánchez, was infected with the A(H1N1) virus, becoming the first head of state sick with the A(H1N1) virus President Arias returned to his normal activities after one week of isolation at his home.