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
An AED is in use and has indicated that a shock is needed, the second rescuer should start compressions immediately after delivering the shock to the individual.
<h3>What is CPR?</h3>
This is referred to as Cardiopulmonary resuscitation and is an emergency lifesaving technique performed when the heart stops beating.This include series of compressions and artificial ventilation so as to ensure the brain functions are preserved.
In the case where an automated external defibrillator (AED) is used and indicates a shock is needed, it is best to give it immediately.
This should then be followed by compressions from the second rescuer which is therefore the reason why it was chosen as the correct choice.
Read more about Cardiopulmonary resuscitation here brainly.com/question/3725035
#SPJ1
Answer:
Doctors believe that diet, medical care, and other lifestyle decisions affect fetal development later in pregnancy. Certain genetic factors can influence things like fetal growth, but this is most shown in the first trimester. Doctors and nutrition experts suggest improving nutritional health several months to a year before planning to become pregnant. Improper nutrition, stress, and overreliance on caffeine, nicotine, or other substances can sometimes impact fertility.
Explanation:
Answer: Lymph node
Explanation:
The lymphatic system of the body works by filtering the blood and remove the harmful pathogen that is present in it.
There are several organs in the lymphatic system that works together at different sites in the body and helps body prevent and cure from infection.
Lymph nodes function to remove pathogen and debris from lymph and it is also referred as filters of lymph. The macrophages and dentritic cells kill the harmful pathogen in the blood.
Hence, the correct answer is option A
Answer:
E. First premolar and second premolar
Explanation:
First premolar and second premolars because In the cusp-embrasure occlusal relationship, the maxillary first premolar is most likely to articulate with the first and second premolars.
