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To: Henry Niman who wrote (75222)10/6/2004 6:19:40 PM
From: DMaA  Read Replies (3) | Respond to of 793905
 
But there is still only one very suspect case of human-to-human transmission:

Investigation of possible human-to-human transmission in a family cluster

The most recent cases are part of a family cluster of four cases under investigation to determine whether human-to-human transmission may have occurred. Immediate investigation of any possible human-to-human transmission is always needed to determine whether transmission has been efficient and sustained. Such a situation would be cause for alarm, as it might signal the start of an influenza pandemic. Inefficient, limited human-to-human transmission may occur on rare occasions and is in line with what is known, from epidemiological and laboratory investigations, about the possible behaviour of the H5N1 virus.

The initial case in the family cluster was an 11-year-old girl who died of pneumonia on 8 September. Thai authorities regard her as a probable case of H5N1; laboratory confirmation is not possible as no specimens from this patient are available for testing. The girl, who lived in the northern province of Kamphaeng Phet, resided with her 32-year-old aunt, whose infection has been confirmed. Both patients are known to have had contact with dead chickens.

The girl’s 26-year-old mother, whose infection is also now confirmed, resided in the Bangkok area, but provided bedside care for her daughter while hospitalized, up to the time of the child’s death. The mother fell ill upon her return to Bangkok, where she died on 20 September.

Thai officials have concluded that the mother could have acquired the infection either from some environmental source or while caring for her daughter, and that this represents a probable case of human-to-human transmission.

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