(Reuters) – British researchers led by Oxford University said on Friday that the current understanding of long COVID and options to treat it is emerging as a major long-term issue for global healthcare systems after reviewing the illness’ effects on patients. The review, published in the European Heart Journal, looked at direct impacts of a coronavirus infection such as myocardial infarction or inflammatory myocarditis – severe heart conditions – and long-term effects such as fatigue and mental wellbeing. “Long COVID is, besides its huge impact for the affected individual, of great societal an…