Those who have received the Pfizer vaccine have been warned about potential delayed side effects.
The US Food and Drug Administration (FDA) has revealed three delayed symptoms associated with receiving the jab, and has urged those who have them to "seek medical attention right away".
As reported by HullLive, the side effects are chest pain, shortness of breath and feelings of having a fast-beating, fluttering or pounding heart.
Over 2.7 million people in Scotland have now received both doses of a Covid-19 vaccine, with most under-30s receiving a Pfizer jab following the news that receiving the AstraZeneca vaccine carries a small risk of blood clots.
Nicola Sturgeon announced today that more than half of Scotland's population is fully vaccinated against Covid-19.
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John Greenwood, president of the British Cardiovascular Society and a consultant cardiologist at Leeds Teaching Hospitals NHS Trust, told The BMJ: “Myocarditis is not an uncommon condition and it can be associated with many different viruses
“In our hospital, for example, we may have one or more patients per week suspected of having it.
“For the vast majority of people myocarditis is a benign, self-limiting condition and can be easily treated with NSAIDs. For a very small number of people the heart muscle can become impaired.”
Nicola Sturgeon has urged those that have yet to receive their first vaccine, or have waited more than 8 weeks since their first jab, to visit a drop-in centre.
Four COVID-related deaths have been recorded in Scotland over the last 24 hours.
Visit NHS inform for more information about COVID-19.