Second Dose Vaccination Side Effects

by Nathan Couvillon

As second doses a rolled out for eligible individuals, there is increased discussion about more pronounced side effects from the second dose as compared to first doses. As a reminder, OFVGA has a vaccine aftercare document available to employers and workers on our website. The aftercare document is available in English, Spanish and Thai, as well as in narrated videos, can be accessed at:

Common side effects often happen within the first three days after vaccination (and subside within a few days) and can include:

  • pain, redness, swelling at injection site
  • tiredness
  • headache
  • muscle or joint pain
  • mild fever, chills
  • diarrhea
  • nausea/vomiting

Employers should keep in mind that workers recently vaccinated could be experiencing these symptoms and workers may temporarily feel unwell.

More severe, but much less common reactions such as the following are considered more serious and should be followed up on with a medical professional immediately:

  • skin rash
  • swelling in the face or mouth
  • trouble breathing
  • high fever (over 40°C)
  • convulsions or seizures
  • very pale colour and other serious symptoms (like “pins and needles”, numbness)

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