Multiple Choice
The avian flu virus H5N1 is considered a greater long-term threat than the swine flu virus H1N1 because __________.
17. Viruses
Viruses
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Birds act as a natural __________ for the influenza __________ virus.
A
defense; A
B
reservoir; C
C
buffer; B
D
pandemic; B
E
reservoir; A
Verified step by step guidance1
Understand the role of birds in the context of influenza viruses. Birds are often carriers of various strains of influenza viruses, which means they can harbor the virus without necessarily showing symptoms.
Identify the term that describes an organism or environment that can harbor a pathogen without being affected by it. This is known as a 'reservoir'.
Recognize that the influenza virus is a type of virus that can infect birds, making them a natural reservoir for this virus.
Match the correct term 'reservoir' with the appropriate influenza virus type, which is often denoted by letters such as A, B, or C. In this context, the correct pairing is 'reservoir; A'.
Review the options provided and confirm that 'reservoir; A' is the correct answer, as birds are natural reservoirs for the influenza A virus.
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