Which of the following is not true? a.Cockroaches can transport a variety of parasites, usually on their external surface. This is an example of mechanical transmission by a vector b.A contamination will inevitably lead to an infection c.Case fatality rate is one of the indicators of virulence of an infectious agent d.None of the pandemics prior to COVID-19 were caused by a coronavirus

Contamination and infection are related concepts in the context of infectious diseases.…

Answered: Which of the following is not true?…

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	a.	Cockroaches can transport a variety of parasites, usually on their external surface. This is an example of mechanical transmission by a vector
	b.	A contamination will inevitably lead to an infection
	c.	Case fatality rate is one of the indicators of virulence of an infectious agent
	d.	None of the pandemics prior to COVID-19 were caused by a coronavirus