In clinical trials, some people have reported a sudden feeling of cold with shivering/shaking accompanied by a rise in temperature, possibly with sweating and headache (including migraine-like headaches), reports Public Health England (PHE).
According to PHE, other cold-like side effects reported include:
- Muscle aches and feeling unwell.
These side effects typically started within a day of having the vaccine and usually lasting for a day or two, notes PHE.
Experiencing any of the above side effects will doubtless cause confusion for many people as they are strikingly similar to coronavirus symptoms.