Covid-19, the country's top epidemiologist said on Wednesday, at the same time as rules for the rest of the country are tightened.Sweden has seen a rise in cases in the last couple of weeks, raising fears of a third wave of infections and leading the Public Health Agency to warn it would introduce tougher controls to halt the spread of the pandemic.Tighter restrictions are expected to be announced on Wednesday.Also Read | Bitter home truths for migrant workersAt the same time, more than 80% of residents of care homes for the elderly have received their first vaccination against Covid-19 and 64% have completed a course of two shots, according to daily Dagens Nyheter."We have discussed how those who have been fully vaccinated can live, and we.