Canada inoculated a larger share of its population with a first dose of a Covid-19 vaccine than the United States, an encouraging step after a rocky start in the rollout of vaccination in the country.

The United States, however, has fully vaccinated more of its residents, with Canada adopting a strategy similar to that of the United Kingdom, which requires the country to space second doses by several months.

More than 20.1 million doses of the vaccine have been administered in Canada, with 48.8% of the population having received at least one vaccine on Friday as of 9:27 a.m. Central Standard Time, according to the government’s immunization tracker.

According to the most recent data from the United States Centers for Disease Control and Prevention, for the first time since their vaccination began on December 14, Canada has overtaken the United States, where 48.2% of the population has received at least one dose. , which was up to date at 6 a.m. on May 20. The United States administered more than 279 million shots in total. These figures will be updated later on Friday.

But data on Thursday showed 38.1% of the U.S. population had completed the vaccination regimen, while Canada had only fully immunized 3.3% of its population as of May 8.

Delays in reporting mean there may be some hesitation over the next day or so for the head of the first doses of vaccine, but the cross-country vaccination rhythms reflect Canada’s accelerating deployment and slowing in the USA.

The two countries vaccinated their first patients on Dec. 14, but the supply issues faced by Canada in the first months of the deployment were more acute than those faced by the United States. Critics said the Trudeau government took too long to sign deals with vaccine manufacturers and failed to act quickly enough to build pharmaceutical manufacturing capacity in the country. The United States announced in March that it would send doses of the vaccine to Canada.

After months of solid progress, vaccine deployment in the United States has slowed. An average of almost 1.6 million vaccines per day was administered during the week ended May 14, a reduction of more than half from a peak rate of 3.3 million vaccines per day on May 11. April, according to CDC data. Some heads of state and city have announced incentives in the hopes that hesitant residents will sign up for a coup.

By early April, about 32 percent of the U.S. population had received at least one dose of the vaccine, while Canada was less than half at about 15 percent. A month later, the share of a dose had risen to 43% in the United States and almost 34% in Canada, even as the latter faced another wave of new coronavirus infections.

Joe Biden wants 70% of American adults to have received at least one dose by July 4, up from 60.5% currently. Seven states have so far managed to reach the president’s milestone, according to CDC data.