A primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak
<h3>What is antigenic drift?</h3>
Antigenic drift is a phenomenon that causes small changes or mutations in the genes of influenza viruses leading to changes in their surface proteins of the virus, which are HA (hemagglutinin) and NA (neuraminidase).
For this reason, new influenza vaccines are produced yearly to alter the effects that may emerge as a result.
Thus, a primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak
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Both cancers involve the same genomic change in homologous chromosomes. The only difference is that the first mutation is inherited and the second is somatic in familial cancer, whereas in sporadic cancer both mutations are somatic.
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You would expect her to be very calm and reassuring, as well as taking vitals every 2 hours. UTIs can cause confusion in elderly people even if they have no previous mental illnesses. Confusion and being recently moved into new surroundings could cause for a very agitated and confuse patient.
Answer:
C
Explanation:
If you look up diagrams and parts of a nerve cell, it is there.
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