Which criteria must be met to define a water-associated disease outbreak?
A) Two or more people with laboratory-confirmed primary amebic meningoencephalitis
B) Two or more cases of chemical poisoning if water quality data indicate contamination by the chemical
C) Two or more people having experienced a similar illness after exposure to water
D) Epidemiologic evidence implicating drinking water as the probable source of the illness
Ans: C
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Two criteria must be met for an event to be defined as a water-associated disease outbreak. First, two or more people must have experienced a similar illness after exposure to water. Second, epidemiologic evidence must implicate recreational water (not drinking water) or volatilization of water-associated compounds into the air surrounding the water as the probable source of illness. Evidence of primary amebic meningoencephalitis and chemical poisoning are not required for confirmation of a water-associated disease outbreak.
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