1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Y_Kistochka [10]
3 years ago
6

How were vaccines first discovered?

Biology
1 answer:
BlackZzzverrR [31]3 years ago
7 0

Explanation:

Vaccination is the administration of a vaccine to help the immune system develop protection from a disease. Vaccines contain a microorganism or virus in a weakened, live or killed state, or proteins or toxins from the organism. In stimulating the body's adaptive immunity, they help prevent sickness from an infectious disease. When a sufficiently large percentage of a population has been vaccinated, herd immunity results. Herd immunity protects those who may be immunocompromised and cannot get a vaccine because even a weakened version would harm them.[1] The effectiveness of vaccination has been widely studied and verified.[2][3][4] Vaccination is the most effective method of preventing infectious diseases;[5][6][7][8] widespread immunity due to vaccination is largely responsible for the worldwide eradication of smallpox and the elimination of diseases such as polio and tetanus from much of the world.

You might be interested in
Deafness is often inherited in humans as an autosomal recessive trait. Assume that this is the case here. Two severely deaf peop
balandron [24]
To act like everything is ok
3 0
3 years ago
Look at the image below. Which of the following is taking place? *
ankoles [38]

Answer:

i will try my best here goes

Explanation:

i believe it is O Cytokinesis in an animal cell because there is the formation of a cleavage furrow.

7 0
2 years ago
Read the text and answer the question plssss
hram777 [196]

Answer:

1995

Explanation

as shown in the graph

6 0
2 years ago
Read 2 more answers
In what ways might a scientist communicate with the wider community in a scientific inquiry
DedPeter [7]

Using things such as the internet. For example, if a scientist wanted feedback, he could turn to an org of other scientists across the globe and get their help.

4 0
3 years ago
Whats up fffffff fffffffffffffffffffffff ffffffffffffffffffffffffffff fffffffffffffffff
fomenos
What’s with all the f’s
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which has a greater ratio of surface area a hippo or a mouse
    15·1 answer
  • Need help with this question<br> ASAP
    10·1 answer
  • After an event such as a forest fire, an ecosystem experiences what is called .
    11·2 answers
  • Water vapor is an important greenhouse gas in Earth's atmosphere. The map
    7·2 answers
  • Gluconeogenesis is the process of synthesizing __________.
    9·1 answer
  • True or False? The low power objective lens has a greater magnification than the high power objective lens.
    11·1 answer
  • What does it mean if something is pure-breeding for a trait?
    6·1 answer
  • Why should surrogacy be legal in Norway?
    12·1 answer
  • What is circulation?<br><br> actually environmental science own words please need it now
    6·2 answers
  • Why do diabetics need to work much harder to maintain glucose homeostasis than non-diabetics?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!