CTET 2 Math and Science 5 Jan 2022 Paper

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Question Numbers: 91-99
Directions : Read the passage given below and answer the questions that follow by selecting the correct/most appropriate options.
1. Vaccines work by training and preparing the body's natural defences - the immune system - to recognize and fight off the viruses and bacteria they target. After vaccination, if the body is later exposed to those disease-causing germs, the body is immediately ready to destroy them, preventing illness. As of 3 June 2021, WHO has evaluated that a number of vaccines against COVID-19 have met the necessary criteria for safety and efficacy : AstraZeneca, Pfizer etc.
Some national regulators have also assessed other COVID-19 vaccine products for use in their countries. Vaccines provide a high degree of protection against getting seriously ill and dying from the disease, although no vaccine is 100% effective.
2. The COVID-19 vaccines are safe for most people 18 years and older, including those with pre-existing conditions of any kind, like auto-immune disorders, hypertension, diabetes, asthma, pulmonary, liver and kidney disease, as well as chronic infections that are stable and controlled. Children and adolescents tend to have milder infection as compared to adults, so unless they are part of a group at higher risk of severe COVID-19, it is less urgent to vaccinate them than older people. More evidence is needed on use of different COVID-19 vaccines in children. Vaccine trials for children are ongoing and WHO will update its recommendations when the evidence or epidemiological situation warrants a change in policy.
3. After vaccination, in most cases, minor side effects : Arm soreness, Mild fever, Tiredness, Headaches, Muscle or joint aches, indicate that a person's body is building protection to COVID-19 infection. Contact your care provider if there is redness or tender ness (pain) where you got the shot increases after 24 hours, or if side effects do not go away after a COVID-19 vaccine, you should not receive additional doses of the vaccine. It's extremely rare for severe health reactions to be directly caused by vaccines. Taking painkillers such as paracetamol before receiving the COVID-19 vaccine to prevent side-effects is not recommended. This is because it is not known how painkillers may affect how the vaccine works. However, you may take paracetamol or other painkillers if you do develop side effects such as pain, fever, headache, or muscle aches after vaccination.
4. Even after you're vaccinated, keep taking precautions - While a COVID-19 vaccine will prevent serious illness and death, we still don't know the extent to which it keeps you from being infected and passing the virus on to others.
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