Pfizer vaccine: ‘Frequency and severity’ of side effects stronger after second dose – CDC

There are a wide range of side effects that have been reported in recipients receiving the coronavirus vaccines. It is important to note that reactions to the vaccines were to be expected, the immune system is generating an immune response that is priming it against COVID-19. Nonetheless, the list of side effects reported by prominent health bodies has provided a valuable insight into how the vaccines impact the body.

The current vaccines approved in the UK Pfizer/BioNTech, Moderna and AstraZeneca/Oxford vaccines require a two-shot regimen to confer maximum protection.

According to data published, the side effects can differ between the doses.

The Centres for Disease Control and Prevention (CDC) has monitored the differing effects in participants from different age groups.

According to the CDC, the “frequency and severity of systemic adverse events was higher after dose two than dose one”.

READ MORE: Pfizer Covid vaccine: Full list of side effects reported – ranging from mild to serious

Other common side effects include:

  • Feeling or being sick
  • A sore arm from the injection
  • Feeling tired.

Can you get vaccinated if you have allergies?

“Most people with allergies (including food or penicillin allergies) can be vaccinated against COVID-19,” explains the NHS.

The health body continues: “Tell healthcare staff before you’re vaccinated if you’ve ever had a serious allergic reaction (including anaphylaxis).

“They may ask what you’re allergic to, to make sure you can have the vaccine.”

COVID-19 vaccines have to go through several stages of clinical trials before they can be approved for use.

Clinical trials are where a vaccine or medicine is tested on volunteers to make sure it works and is safe.

All vaccines used in the UK must be approved by the independent Medicines and Healthcare products Regulatory Agency (MHRA).

The MHRA makes sure the vaccines meet strict international standards for safety, quality and effectiveness. Once a vaccine is approved, it’s closely monitored to continue to make sure it is safe and effective.

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