Sweden’s ambassador to the United States has said that Stockholm could reach “herd immunity” sometime in May. In contrast to many of its European neighbors, Sweden has imposed much more relaxed restrictions, keeping most businesses open. Over 2,000 people have died of COVID-19 in Sweden — a significantly higher death toll in relation to its population than neighboring Denmark and Norway, which both imposed strict lockdowns. The World Health Organization has warned there is no evidence that patients who have recovered from COVID-19 are immune to reinfection.