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Fofino [41]
1 year ago
11

A primary reason for needing a new vaccine for influenza each year is that _____. see concept 43.4 (page)

Medicine
1 answer:
kiruha [24]1 year ago
8 0

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

Learn more about influenza here:

brainly.com/question/12975693

#SPJ1

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A heart rate under 60 BPMs can indicate that the heart is not healthy and the patient might have bradycardia.

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Type the correct answer in each box. Spell all words correctly.
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If, upon ultrasound examination, the sonographer visualizes the fetal heart displaced to the right, the diagnostic possibilities
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Ms. Washington is a 67-year-old who had a heart attack last month. Now she complains of shortness of breath and not being able t
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Answer: Pathophysiological problem

Explanation:

Pathophysiological problems refers to the study of the adverse changes that occur in the normal physical, mechanical and biochemical functioning of the body. These changes are caused either due to a disease or an abnormal syndrome.  

The given situation is an example of the pathophysiological problem. This is due to abnormal changes in the physical, mechanical and biochemical functioning of the body. The physical changes includes the shortness of breath, swollen ankles , three gallops and not being able to sleep in flat position. The increased jugular venous pressure, crackles in the lung, are the example of the mechanical changes in the pathophysiological problem.

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Why might enlargement of the prostate gland affect urination?
elena-14-01-66 [18.8K]
“The prostate is a gland that produces the fluid that carries sperm during ejaculation. The prostate gland surrounds the urethra, the tube through which urine passes out of the body.

Male reproductive anatomy
An enlarged prostate means the gland has grown bigger. Prostate enlargement happens to almost all men as they get older.

An enlarged prostate is often called benign prostatic hyperplasia (BPH). It is not cancer, and it does not raise your risk for prostate cancer.

Enlarged prostate glandWatch this video about:
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Causes
The actual cause of prostate enlargement is unknown. Factors linked to aging and changes in the cells of the testicles may have a role in the growth of the gland, as well as testosterone levels. Men who have had their testicles removed at a young age (for example, as a result of testicular cancer) do not develop BPH.

Also, if the testicles are removed after a man develops BPH, the prostate begins to shrink in size.

Some facts about prostate enlargement:

The likelihood of developing an enlarged prostate increases with age.
BPH is so common that it has been said all men will have an enlarged prostate if they live long enough.
A small amount of prostate enlargement is present in many men over age 40. More than 90% of men over age 80 have the condition.
No risk factors have been identified, other than having normally-functioning testicles.
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