Which statement about viruses is true?

The statement that very low numbers in food can cause illness is true because viruses are extremely potent pathogens. Unlike bacteria, which often require significant growth to lead to illness, only a small amount of a virus can be enough to cause disease. This is particularly concerning in food safety, as even minute quantities can lead to viral infections such as Norovirus or Hepatitis A.

Viruses do not multiply or grow in food; they require a living host to reproduce, which distinguishes them from bacteria. In terms of size, viruses are generally much smaller than bacteria. Additionally, freezing does not effectively kill viruses; they can survive freezing temperatures and remain infectious. This characteristic underscores the importance of proper food handling and hygiene practices to prevent viral contamination and transmission.