Question

Which of the following statements is not true about influenza: New strains of influenza virus tend...

Which of the following statements is not true about influenza:

New strains of influenza virus tend to arise in Asia

Vaccines against influenza must be changed each year

Avian influenza is especially contagious among humans

Avian influenza is especially lethal to humans

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Answer #1

Which of the following statements is not true about influenza:

Avian influenza is especially contagious among humans

Avian influenza is especially lethal to humans

Explanation

H5N1 bird flu viruses are not contagious easily from one person to other. It is not especially lethal to humans but to birds. However, once being spreaded from birds, they are deadly to humans and to other mammals also.

Usually, the influenza viruses emerge from east or southeast Asia every year and become pandemic. Flu viruses keep evolving and vaccines need to be changed every year. It is called antigenic drift.

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