Food poisoning strikes 36 at Jing’an high school
Print Edition
JING’AN District food and health authorities are investigating how 36 teachers and students at Qiyi High School contracted food poisoning — most of them severe cases — this week, officials said yesterday.
The school said about 23 teachers and 13 students began reporting ill from Tuesday afternoon. A local hospital diagnosed 22 of them with acute gastroenteritis.
As of yesterday, all but one, a student, had recovered, district education authority officials said. Tests by the Jing’an Disease Control and Prevention Center found signs of the Norwalk virus, or Norovirus, the most common cause of gastroenteritis. Symptoms include vomiting and diarrhea.
The virus usually spreads through tainted food or water or through the air.
Outbreaks are most common in winter — Norovirus is also known as “the winter vomiting bug.”
The disease is highly contagious and has an incubation period of 12-72 hours. Most patients recover on their own within two to three days.
Jenny, who said she was a cousin of a grade three girl, said teachers developed symptoms from Tuesday and most students reported feeling sick on Wednesday.
School headmaster Zhou Yun told Shanghai TV News nothing had been found to link the school canteen to the outbreak. The school contracts a food company to provide daily lunch boxes.
Zhou said some of the infected teachers did not eat lunch at school, so the virus might have been spread by the air. She did not give further details.
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