Colorado getting ready to move on to the next vaccination phase, monitoring possible sudden increase in the COVID-19 variant
The 7-day positivity rate sees a slight increase as Wisconsin reports more than 24K vaccinated against COVID-19
US Coronavirus: Experts fear that the increase in Covid-19 powered by a variant could take weeks, but cases are likely to fall again in the summer
Report of calls for the postponement of second doses of the vaccine, warns of an increase driven by the coronavirus variant
