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IrinaK [193]
3 years ago
5

Explain why the individual who is a carrier for hbv is considered a threat to public health.

Biology
1 answer:
posledela3 years ago
7 0

Answer:

HBV (hepatitis B) is a viral infection that attacks the liver.  It can cause acute or chronic disease and it is transmitted through contact of blood or other body fluids of an infected person.  

<em>An infected person can be transmitted through birth, sharing of needles, sharing of common household personal hygiene items, direct contact with an open or bloody sore, or through sexual contact.</em>

It is a hidden treat because those who have hepatitis B can transmit it to another (blood/other body fluid); if they know they have it or not.  

Acute hepatitis B is short-term (6 months after being exposed) and they can become immune and can not get infected again; but it can lead to chronic hepatitis B (depends on how healthy the person is).

Chronic hepatitis B can cause liver damage, cirrhosis, liver cancer, and death.  

Explanation:

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What does the red-shift of galaxies indicate? A. The galaxies are not moving. B. The galaxies are shrinking. C. The galaxies are
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The instructions for the genetic traits of an organism are directly determined by the
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The answer would be:

B. Sequence of the bases in DNA molecules.

Here is more about your questions:

DNA contain the instructions of the traits of an organism. Most of the organism have the same DNA but what makes each different is the sequence of the DNA. The sequence gives the instructions for the production of amino acid that will produce, which in turn determines what traits will be passed on or manifested by that individual.

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3 years ago
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In addition to E. coli, a risk factor for development of pyelonephritis is: a. urinary retention and reflux. b. nephrotic syndro
monitta

Answer:

One of the factors for the development of pyelonephritis, in addition to E. coli, is urinary retention and reflux (option a).

Explanation:

Pyelonephritis is an infection of the upper urinary tract caused by bacteria in the urine, such as Escherichia coli.

Under normal conditions, urine in the urinary bladder is aseptic, that is, without bacteria.  The presence of bacteria in the urine indicates a urinary infection.

Urinary retention is the limitation of the expulsion of urine from the bladder. This promotes:

  • <em>An increase in the amount of bacteria present in the bladder. </em>
  • <em>The pressure generated by urine retention causes the bladder to generate a retrograde flow - reflow - towards the ureters, leading the bacteria to the kidneys. </em>

The result of urinary retention and reflux - when bacteria are present - is an infection in the upper urinary tract, called pyelonephritis.

Learn more:

Urinary tract infection brainly.com/question/4756206

5 0
3 years ago
What are the answers to 3 and 4
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