The number of students diagnosed with A/H1N1 flu at an elementary school in Houston, the U.S. state of Texas, rose to 24, local health officials said Monday.
The flu outbreak at Houston's Travis Elementary School is the state's largest in a single setting, according to newspaper Houston Chronicle.
"It's still too early to know how widespread this was at the school," said Porifirio Villarreal, a spokesman for the Houston Department of Health and Human Services.
Only two specimens from Travis students have come back negative for H1N1 flu, said Villarreal, adding that he anticipates the health department laboratory will be receiving more samples of Travis students to test.
Health officials said earlier that they expect there are more than just H1N1 flu involved in the illness of Travis students. One of the two cases that tested negative for H1N1 flu is seasonal flu, they said.
The school was closed last Friday after 12 H1N1 cases were confirmed and some 400 out of the 712 students at the school stayed home.
Illness began spreading at Travis Elementary School last Wednesday, with 86 students missing classes with such symptoms as fever, headaches and stomachaches. It was not known how many students fell ill and how many were kept at home by parents as a precaution.
The school will remain closed until May 26 and during that period time, officials hope the virus may die on its own.
Source:Xinhua
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