True or False: A person may infect others before showing any symptoms of an illness.

The statement is true because certain illnesses, particularly those caused by viruses such as the flu or norovirus, can be transmitted by an infected person before they exhibit any symptoms. This period is known as the incubation period, during which the virus can be present and replicating in the body without causing noticeable signs of illness. This asymptomatic phase is critical in the spread of infectious diseases, as individuals may not realize they are contagious and can unknowingly infect others.

Understanding this concept is crucial for food handlers and anyone working in food service, as it emphasizes the importance of hygiene practices, such as regular handwashing and not coming to work while feeling unwell, even if symptoms haven't yet appeared. This knowledge helps prevent the spread of foodborne illnesses and maintains public health safety.