US President Joe Biden announced plans to vaccinate most Americans by the end of July with the help of 200 million newly acquired doses, as the country's inoculation campaign kicked off a new phase in drugstores and supermarket pharmacies, some of which will offer shots as of Friday.

With the latest vaccine purchases, the United States — the world's hardest-hit country with more than 470,000 deaths — is on track “to have enough supply for 300 million Americans by the end of July,” Biden said, meaning enough inoculations for all eligible people.

He made the announcement after touring the National Institutes of Health near Washington, with a million previously acquired vaccine doses already headed to around 6,500 drugstores and supermarket pharmacies.