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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Answer:
Written test and a skills test
Explanation:
I think it's correct
Answer: The cross sectional study of health system.
Explanation:
Ethnomedicine is the cross sectional study of health system that goes beyond analysis of the health system impacted by the globalization, cultural concepts of the body, use of animals and plant resources in treatment of health issues.
(c) The correct answer for this option is ulcers.
Helicobacter pylori is caused by H.Pylori bacteria which infect your stomach. The spiral shape of H. pylori allows it to penetrate the stomach lining, where it’s protected by mucus and the body’s immune cells can’t reach it.
Helicobacter pylori infection infect the stomach lining and may lead to ulcers (sore on the lining of the stomach (gastric ulcer) or the first part of the small intestine (duodenal ulcer) in stomach and small intestine.
To know more about Helicobacter pylori,
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Alcohol intake is one for sure. i don’t know the other for sure tho
