Hepatitis A is usually transmitted through the faecal-oral route, meaning that a person somehow ingests contaminated faeces from an infected person.
FreshKampo, the Mexico-based company that grew the strawberries, said it is working with regulators to figure out the source of the problem.Berries are a common conduit for viruses because they are so delicate that they can only be harvested by hand, according to the Live Science news outlet.
If workers have not properly washed their hands after using the bathroom, they could transfer the virus to the fruit.Another way strawberries can be contaminated is if the water used to irrigate them has been contaminated with raw sewage, which can carry the virus.The virus may not be washed off easily because there are nooks and crannies where particles can hide.
H-E-B, a supermarket chain in Texas, said it has not received or sold organise strawberries from the supplier since 16 April.
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