Contact with calves or their feces is a known risk factor for STEC infection1,2,3
. In this outbreak,
the four primary cases were among the children at the house party with exposure to water in
the pool. The ill children did not all report having direct contact with the calf, did not eat the
same foods at the party, and had no other commonalities during their exposure period.
Therefore, the investigators hypothesize that accidental ingestion of water that was
contaminated with calf feces could have caused this outbreak. STEC infection can cause severe
illness including diarrhea that is often bloody, vomiting, and stomach cramps4
. The toxin
produced by this particular strain of STEC O157, toxin 2, is more likely to lead to hemolytic
uremic syndrome (HUS) than are strains of STEC that produce only toxin 1; this could account
for the severity of illness experienced by affected individuals in this outbreak5
Contact with calves or their feces is a known risk factor for STEC infection1,2,3. In this outbreak,the four primary cases were among the children at the house party with exposure to water inthe pool. The ill children did not all report having direct contact with the calf, did not eat thesame foods at the party, and had no other commonalities during their exposure period.Therefore, the investigators hypothesize that accidental ingestion of water that wascontaminated with calf feces could have caused this outbreak. STEC infection can cause severeillness including diarrhea that is often bloody, vomiting, and stomach cramps4. The toxinproduced by this particular strain of STEC O157, toxin 2, is more likely to lead to hemolyticuremic syndrome (HUS) than are strains of STEC that produce only toxin 1; this could accountfor the severity of illness experienced by affected individuals in this outbreak5
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