surge. iceland's prime minister tested positive for covid-19 after contracting the virus from a family member. she'll have to isolate for five days, according to iceland's rules. and in frankfort, germany, reuters reports that hundreds gathered on saturday to protest against covid regulations and potential mandatory vaccinations. there's new scrutiny of federal u.s. covid guidance as more states move forward with lifting mask mandates. new infections are declining across the country as the omicron wave subsides. that drop has led towards a number of states relaxing measures towards a new normal, and even retailers are making the change. walmart is lifting its mask mandate, effective immediately for fully vaccinated employees. the chain also said it's ending the required daily health screenings for employees by the end of the month, except for those working in states where it's still required. now, the evolving guidance at the local level has drawn attention to the federal health standards at the cdc, which has yet to change its