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Timeline of Mexico's 2009 Swine Flu Outbreak

Day-by-day developments in the 2009 Swine Flu H1N1 Epidemic


Travelers During Swine Flu Outbreak
Getty Images/Feng Li/Staff

The 2009 swine flu epidemic began with a few cases of respiratory illness in Mexico and went on to spread out, infecting people in several countries and causing governments to issue warnings and advisories against travel to Mexico.

Here is a timeline of the Mexican swine flu outbreak, its effects, and the measures taken to impede its spread.

See also: Is it safe to travel to Mexico during the swine flu outbreak? and Swine Flu Travel Tips.

May 15, 2009
The US Centers for Disease Control (CDC) downgrades its recommendation against all but essential travel to Mexico. The CDC continues to recommend that travelers visiting Mexico take steps to protect themselves from getting H1N1 influenza (swine flu), and also recommends that travelers at high risk for complications from influenza discuss their travel plans with their physician.

May 13, 2009
There have been 2059 cases of H1N1 (swine flu) detected in Mexico, with 56 deaths. The United States reports 3009 cases and 3 deaths. Canada has 358 cases, including one death. Costa Rica has eight cases, and one death. There is a total of 5728 cases world-wide, in 33 countries.

May 11, 2009
Mexico has 1626 laboratory-confirmed cases of H1N1 (swine flu) infection, including 48 deaths. The United States has reported 2532 cases, with three deaths. Canada and Costa Rica have each reported one death due to swine flu. There are 4694 cases world-wide, in thirty different countries. (WHO)

Daycares, preschools and primary schools throughout Mexico re-opened today after being closed since April 28th (Mexico City schools had been closed since April 24).

May 10, 2009
It's Mother's Day in Mexico and restaurant and store owners hope to recoup their losses from the past two weeks.

May 9, 2009
There are 1364 cases of H1N1 (swine flu) infection in Mexico, including 45 deaths, and 1639 cases in the United States, with 2 deaths. Canada has 242 cases, and one death. There are a total of 3440 cases world-wide, in 29 countries. (WHO)

The number of confirmed cases of the H1N1 flu virus in the United States now outnumbers those in Mexico. The number of new cases in Mexico appears to be decreasing, whereas in the United States the virus seems to be on an upswing, and is now being transmitted from person to person within the US whereas previously the majority of the cases seemed to be related to travel to Mexico.

May 8, 2009
Mexico has 1204 laboratory-confirmed cases of H1N1 (swine flu) infection, including 44 deaths. The United States has 896 cases, and two deaths. There are 2500 confirmed cases of the H1N1 virus world-wide, in 25 different countries. (WHO)

Mexico's cases are spread over 25 states, with the highest concentration in Mexico City. The Secretary of Health has said that the has been a reduction of new cases in the past few days. Mexico's capacity to test flu samples has been expanded to 700 a day, and the government plans to continue to boost this capacity. Businesses that deal with the general public are being monitored by authorities to ensure the high-level of sanitary requirements are being met.

May 7, 2009
Mexico has 1112 confirmed cases of H1N1 (swine flu) infection, with 42 deaths. In the US there have been 896 laboratory confirmed cases, including two deaths. In total there are 2371 cases in 23 different countries. (WHO)

In Mexico there is a feeling of things beginning to return to normal, though it is clear that Mexico's economy in general, and the tourism industry in particular will take a long time to recover.

May 6, 2009
There are 942 laboratory confirmed cases of H1N1 (swine flu) infection in Mexico, including 29 deaths. The United States has reported 642 laboratory confirmed cases, and two deaths. A total of 1893 cases of swine flu have been detected in 23 different countries.

Businesses in Mexico City which had been closed to curb the spread of swine flu re-open, as do most archaeological sites. Museums and the remainder of archaeological sites will reopen on the 7th and 8th, after extensive cleaning and following strict measures to maintain a high level of cleanliness. Higher education is scheduled to resume on the 7th, and schoolchildren (preschool, primary and secondary schools) will return to classes on the 11th.

May 5, 2009
Mexico has 822 laboratory confirmed cases of H1N1 (swine flu) infection and 29 deaths. The United States has 403 cases, Canada has 140 and Spain has 57 cases of the virus. There are a total of 1490 cases in 21 countries which have officially been reported. (WHO)

In Mexico it appears that the virus is in a declining phase. The country quietly celebrates Cinco de Mayo, and prepares for life to (hopefully) return to normal in the coming days. It is announced that archaeological sites will be reopened as of tomorrow, May 6th.

A second death was reported in the United States - a 33 year-old Texas woman who had swine flu, as well as other pre-existing medical conditions, died in hospital after recently giving birth to a healthy baby. (CNN)

May 4, 2009
There are 590 laboratory confirmed cases of H1N1 (swine flu) infection in Mexico, with 25 deaths, and 286 in the United States. Canada has 101 cases and Spain has 54. In total there are 1085 cases in 21 different countries. (WHO)

The Mexican Secretary of Health, José Ángel Córdova, announced that economic activities will resume on May 6th, higher education institutions will resume classes on May 7th whereas preschool, primary and secondary schools will resume on May 11th.

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