A recent study in the Lancet Journal proposes that the risk of heart-attack and stroke is three-times more probable in the two-weeks following a Covid infection. A control group of 348,481 patients were studied in Sweden and the occurrence of myocardial infraction or heart-attack, and stroke were found in 86, 742 of these individuals who had just suffered Covid-19.

The risk remained as acute even after researchers made allowances for known risk factors for heart-attack and stroke such as comorbidities, gender, socio-economic factors and age.

Two statistical methodologies were used in this study: self-controlled case series and the matched cohort study. The former is a technique that was developed to estimate the risk of complications after vaccines, say the researchers.