Summary Read the full fact sheet. On this page. Common side effects after immunisation Managing common side effects Concerns about immunisation side effects Uncommon or rare immunisation side effects Safety testing and re-testing of immunisations The bottom line Do you have all the information you need?
Where can I get more information about immunisation? Where to get help. Common side effects after immunisation The most common side effects of immunisations are: fever that is, a temperature over This should not be of concern and requires no treatment.
Managing common side effects A number of treatment options can reduce the side effects of the vaccine including: Give extra fluids to drink. Do not overdress children or babies if they are hot. Put a cold wet cloth on the injection site to ease discomfort. Although routine use of paracetamol after vaccination is not recommended, if fever or pain at the injection site is present, paracetamol can be given. Check the label for the correct dose or speak with your pharmacist, especially when giving paracetamol to children.
Concerns about immunisation side effects If a reaction following immunisation is unexpected, persistent or severe, or if you are worried, see your GP doctor. Uncommon or rare immunisation side effects There is a very small chance of experiencing a serious reaction after immunisation. Examples of uncommon or rare reactions are: anaphylaxis — an immediate allergic reaction.
This is dramatic but rare fewer than one in a million people will have anaphylaxis after a vaccination , and it is completely reversible if treated quickly. It can be frightening and usually does not cause permanent harm or have lasting effects. This is a rare side effect for about 1 in 17, babies. Safety testing and re-testing of immunisations Millions of people — many of them babies and young children — are immunised every year, with no side effects.
Other people may experience mild common side effects. The bottom line Think of it this way — a vaccine is a medicine that we use to stop ourselves and those in our care from getting sick.
Do you have all the information you need? Where to get help Your GP doctor In an emergency, always call triple zero Emergency department of your nearest hospital Your local government immunisation service — visit Know Your Council to find your local government authority Maternal and Child Health Line 24 hours Tel.
What are some of the myths — and facts — about vaccination? National Immunisation Program Schedule. Pre-immunisation checklist — what to tell your doctor or nurse before immunisation , , Department of Health, Victorian Government. Give feedback about this page. Variants are another reason we might need an additional shot.
The current vaccines are designed to work against a particular spike protein on the coronavirus, said Mehul Suthar of the Emory Vaccine Center. If the virus mutates enough over time, vaccines might need to be updated to boost their effectiveness. So far, the vaccines appear protective against the notable variants that have emerged, though somewhat less so on the one first detected in South Africa.
If it turns out we need another shot, a single dose could extend protection of the current shots or contain vaccination for one or more variants. The need for follow-up shots will also depend partly on the success of the vaccination push globally, and tamping down transmission of the virus and emerging variants.
Visit our coronavirus hub and follow our live updates page for the most recent information on the COVID pandemic. What remains unclear, however, is exactly how long the vaccines prevent COVID, if booster shots may be needed down the road, or if vaccines will need to be tweaked to fight against emerging variants of the virus.
In an April 2 report , the Centers for Disease Control and Prevention CDC studied almost 4, vaccinated healthcare personnel, first responders, and other essential and frontline workers. They found that the messenger RNA mRNA vaccines developed by pharmaceutical companies Pfizer-BioNTech and Moderna prevented 80 percent of cases after the first dose and 90 percent after the second dose. Susan Bailey , an allergist and immunologist and president of the American Medical Association, told Healthline.
Separately, Pfizer-BioNTech said that the ongoing phase 3 clinical trial of its mRNA vaccine shows that strong immunization persists for at least 6 months among vaccinated individuals. Researchers found that the vaccine was percent effective against severe disease as defined by the CDC, and I would have been concerned if efficacy had dropped by a third or half.
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