Common kids' illness linked to mysterious Cambodian deaths
Source: Agencies |
July 10, 2012, Tuesday
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A deadly form of a common childhood illness has been linked to the mysterious deaths in Cambodia that caused alarm when a cause could not immediately be determined, health officials said yesterday.
Laboratory tests have confirmed that a virulent strain of hand, foot and mouth disease known as EV-71 is to blame for some of the 59 cases reviewed, including 52 deaths, according to a joint statement from the World Health Organization and Cambodian Health Ministry. The numbers were lowered from the initial report of 62 cases.
EV-71 is a virus that can result in paralysis, brain swelling and death. Most of the Cambodian cases involved children younger than three who experienced fever, respiratory problems that quickly progressed and sometimes neurological symptoms. Epidemiologists are still trying to piece together information about the cases by talking to parents because some details were omitted or were missing from medical charts and specimens were not taken from most children before they died, said Dr Nima Asgari, who is leading the investigation at WHO. Of 24 samples tested, 15 came back positive for EV-71.
"As far as I'm aware, EV-71 was not identified as a virus in Cambodia before," Asgari said, adding that based on the information now available it's likely that the majority of patients were infected with it. "We are a bit more confident. We are hoping that we can come up with something a bit more conclusive in the next day or so."
Hand, foot and mouth disease has been raging across Asia and usually causes a telltale rash. Rashes were only reported in some of the Cambodian cases, and it's possible that steroids administered by doctors could have masked that symptom or that it wasn't recorded, he suggested.
The laboratory results also identified other diseases in some cases, including mosquito-borne dengue fever and Streptococcus suis, a germ commonly seen in pigs that sometimes infects people, often causing meningitis and hearing loss.
Hand, foot and mouth disease is spread by sneezing, coughing and contact with fluid from blisters or infected feces. It is caused by a group of enteroviruses in the same family as polio. No vaccine or specific treatment exists, but illness is typically mild and most children recover quickly.
Neighboring Vietnam has been battling a surging number of hand, foot and mouth disease cases for the past few years, with EV-71 also wreaking havoc there. China is also experiencing an outbreak, and more than 240 people have died of the disease there this year, according to China's health ministry.
Laboratory tests have confirmed that a virulent strain of hand, foot and mouth disease known as EV-71 is to blame for some of the 59 cases reviewed, including 52 deaths, according to a joint statement from the World Health Organization and Cambodian Health Ministry. The numbers were lowered from the initial report of 62 cases.
EV-71 is a virus that can result in paralysis, brain swelling and death. Most of the Cambodian cases involved children younger than three who experienced fever, respiratory problems that quickly progressed and sometimes neurological symptoms. Epidemiologists are still trying to piece together information about the cases by talking to parents because some details were omitted or were missing from medical charts and specimens were not taken from most children before they died, said Dr Nima Asgari, who is leading the investigation at WHO. Of 24 samples tested, 15 came back positive for EV-71.
"As far as I'm aware, EV-71 was not identified as a virus in Cambodia before," Asgari said, adding that based on the information now available it's likely that the majority of patients were infected with it. "We are a bit more confident. We are hoping that we can come up with something a bit more conclusive in the next day or so."
Hand, foot and mouth disease has been raging across Asia and usually causes a telltale rash. Rashes were only reported in some of the Cambodian cases, and it's possible that steroids administered by doctors could have masked that symptom or that it wasn't recorded, he suggested.
The laboratory results also identified other diseases in some cases, including mosquito-borne dengue fever and Streptococcus suis, a germ commonly seen in pigs that sometimes infects people, often causing meningitis and hearing loss.
Hand, foot and mouth disease is spread by sneezing, coughing and contact with fluid from blisters or infected feces. It is caused by a group of enteroviruses in the same family as polio. No vaccine or specific treatment exists, but illness is typically mild and most children recover quickly.
Neighboring Vietnam has been battling a surging number of hand, foot and mouth disease cases for the past few years, with EV-71 also wreaking havoc there. China is also experiencing an outbreak, and more than 240 people have died of the disease there this year, according to China's health ministry.
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