The attenuated oral poliovirus vaccine (OVP) is no longer administered in the U.S.A. because it can be spread to contacts and can occasionally cause poliomyelitis.
<h3>What is Vaccine?</h3>
The vaccine may be defined as any substance which is prepared for the stimulation of antibodies and furnishes immunity against one or several diseases.
Oral poliovirus vaccines have chances to revert back into their wild-type strain and again cause disease. Children vaccinated with oral polio vaccines shed poliovirus which spread to contacts.
Therefore, it is well described above.
To learn more about Oral poliovirus vaccines, refer to the link:
brainly.com/question/7148795
#SPJ1
Secondary immune responses upon a second exposure to a pathogen are due to the activation of antigen or virus that cause disease.
<h3>What is secondary immune exposure?</h3>
A second exposure to the antigen that was in the vaccine, or to the pathogen that make the person ill. Due to this causes the white blood cells to respond much more quickly so this is type of response is known as secondary immune response.
Learn more about immune here: brainly.com/question/6612564
Answer:
a. I olfactory
Explanation:
Journey of the Olfactory nerve:
-Originates on the caudal surface of the olfactory bulb
-Crosses the cribriform plate of the ethmoid bone from one part of the critlal galli to the other
-Reachers the olfactory region of nasal cavity
In the nervous system, electrical impulses carry messages to different organs of the body. The endocrine system uses hormones, chemical signals, to carry commands to the destined organs and cells
