Tiredness, fatigue, muscle pain, chills, fever, and nausea are typical side effects of all vaccinations, according to the US Centers for Disease Control and Prevention (CDC).
Pressure, redness, and swelling are normal on the arm where the shot is administered, according to the CDC. The second dose of certain vaccines has been confirmed to cause further side effects.
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“I recognized that after my second dose, the next day I did feel a little tired, a little achy,” Dr. Alan Taege of Cleveland Clinic’s Department of Infectious Disease told Cleveland 19. “I took a couple of Tylenol and went back to work. So I believe the majority of people would note a slight increase, but it is unlikely to be something serious or significant.”
However, according to Dr. Taege, side effects are a positive sign.
“And the fact that you’re experiencing a few more symptoms only confirms that your body is developing a reaction to the vaccine, which is exactly what you want.”
When it comes to the Moderna vaccine, which needs two doses, the FDA warns that people can experience both general side effects and injection site reactions, which are similar to those listed by the CDC. People can feel swelling as well as “pressure, tenderness, and swelling of the lymph nodes in the arm of the injection.”
The FDA, on the other hand, warns that there could be more significant side effects, which could suggest a severe allergic reaction. After receiving the vaccine, a serious allergic reaction “will normally occur within a few minutes to one hour.”
A serious allergic reaction may cause difficulty breathing, swelling of the face and throat, dizziness, and weakness.
Other side effects have been identified for both Moderna and other vaccines, but they are not uncommon.
According to NBC News, John Howard, 45, who obtained the Pfizer vaccine (which needs two shots), characterized it as “like getting nickels in your mouth.” According to the study, Paul Wartenberg, 50, also reported having a metallic taste in his mouth for several hours after receiving the Moderna injection.
In addition, women are said to have more side effects than men. According to People, the CDC studied the side effects of the Pfizer and Moderna vaccines and discovered that women experienced 79.1 percent of the side effects while receiving just 61.2 percent of the disease.
The Johnson & Johnson vaccine, unlike those from Pfizer and Moderna, only needs one injection. Furthermore, unlike the Moderna and Pfizer variants, which must be kept frozen and expire within hours of being removed from cold storage, the vaccine can be stored refrigerated
According to patients who got the vaccine, the side effects are very similar.
After having her Johnson & Johnson fired, 18-year-old college student Chloe Kathuria told Business Insider, “I was freezing.” “I couldn’t stop moving for hours because I was shaking, which was painful because all of my muscles hurt.”
According to the study, common Johnson & Johnson side effects include arm pain, headaches, and fatigue.
Kathuria also had arm pain, severe chills, a lack of appetite, and a two-day-long fever. According to Business Insider, the aches, on the other hand, lasted a week.
Given the side effects, which are typical with any vaccine, the three vaccines have high efficacy rates, according to the CDC, FDA, and others.
Based on preliminary results from ongoing trials, Moderna recorded an efficacy rate of nearly 95% in November. Moderna’s vaccine was later reaffirmed by the FDA in December as safe and effective in preventing serious coronavirus cases in adults.
Pfizer also stated that their vaccine had a 90 percent efficacy rate.
In clinical trials, Johnson & Johnson was 100 percent successful in preventing death and had an efficacy rate of 85 percent in preventing severe coronavirus infections that needed hospitalization. However, when the vaccine was tested against particular virus mutations, it had a 72 percent overall efficacy score.