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The pandemic has impacted almost every corner of life, causing global economies to stall, changing the way we work and interact with our loved ones, and stretching healthcare systems to the limit. Governments around the world have been forced to implement harsh restrictions on human activity to curb the spread of the virus. Researchers have been working around the clock to develop effective vaccines, which people started receiving in December 2020. This pandemic, people looks at the types of COVID-19 vaccine, how they work, their safety, and how to get one. Different vaccines are now available in various countries. In the United States, vaccines need approval from the Food and Drug Administration (FDA).
First, they need to pass through three phases of tests to prove that they are safe and effective. The last stage, phase 3, involves tens of thousands of participants.
At the time of writing, two vaccinesTrusted Source have FDA approval for use in the U.S.:
•the Pfizer-BioNTech COVID-19 vaccine
•the Moderna COVID-19 vaccine
The Pfizer-BioNTech vaccine, developed in Germany, received FDA approval in the form of an emergency use authorization on December 11, 2020Trusted Source.
Are the vaccines safe? A vaccine needs to pass through several stages of trials before the manufacturer can apply for approval from a country’s health authority. In the U.S., the FDA gives this approval, and the Centers for Disease Control and Prevention (CDC)Trusted Source also work to ensure public safety.
Vaccine trials involve ever-larger numbers of people. The last stage, phase 3, includes tens of thousands of participants.
At first, the specific long-term effects of any new medical treatment, including a vaccine, are unknown. The key is to balance the potential risks of getting a vaccine that has undergone extensive testing with the known dangers of developing COVID-19.
In the short term, a person who has had a COVID-19 vaccine may experience flu-like symptoms and other side effects, including:
•pain at the injection site
•swelling at the injection site
•fatigue
•headache and muscle pain
•a fever
The side effects may be worse after the second dose of the vaccine because the body’s immune response will be intensified. If anyone needs medical care for what may be COVID-19 symptoms, call ahead to let the clinic or hospital know about the problem and wear a face mask on the way.
COVID-19 is a major health challenge throughout the world. Experts and authorities are working to develop and administer vaccines and enact other preventive measures.
The goal is for everyone to have access to a COVID-19 vaccine. While waiting for it to become available, follow all guidance from public health authorities and medical experts.
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