Mexico confirmed that a person from Mexico infected with the swine flu virus developed symptoms on 11 March, six days earlier than the case that many in the media called "patient zero" science Insider has learned. The finding not only adds a new entry at the left end of the timeline of the epidemic, but it also calls into question the geographical link between the old Patient Zero and a large pig farm.
Epidemiologist Mauricio Hernández-Ávila Vice Minister of disease prevention and health promotion for the Ministry of Health of Mexico, stressed science Insider that Mexican labs still many former test samples. "I think we will have previous cases, and we are working on it," said Hernández-Ávila, noting that they have other samples not tested from early March and possibly in February.
The previous patient zero, a 4 year old boy from La Gloria in Veracruz, lived near a huge pig farm in Perote, Granjas Carroll, which some suspect may be housed a pig infected than kick the epidemic. But the trial did not find a pig infected by what is now called the 09 A (H1N1) influenza, or have farm workers tested positive.
Hernández-Ávila said he remains open minded about the origin and may eventually point to the Perote region when they do more tests. "It is remarkable that in such a small community, which is isolated, we have a swine flu positive person," he said.
* Note :. Subject to change
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