Enough vaccine in US will be available by May

The US will have enough coronavirus vaccines for every adult by the end of May, President Joe Biden has said. This will be two months earlier than previously expected, but Mr Biden said the vaccination drive must be extended, too, and people convinced to take it. And he warned people to "stay vigilant" because "this fight is far from over", with new variants a major concern.

His caution is at odds with some states, which are relaxing restrictions in order to boost their economies. Although there has been a sharp fall in cases since the start of the year, in some areas that drop has been levelling off, fuelling fears of another wave. The US has recorded 28.7 million infections and 516,000 deaths related to Covid-19 since the pandemic began, according to Johns Hopkins University research. More than 76 million vaccination doses have been administered - covering 15.3% of the population and the US remains on track to meet Mr Biden's pledge of delivering 100 million Covid-19 vaccine doses in his first 100 days in office. 

What was in Mr Biden's latest announcement? 

The president said that drug manufacturer Merck - which this year discontinued work on its own vaccine - would now be helping Johnson & Johnson to produce its newly approved one-shot drug. "We're now on track to have enough vaccine supply for every adult in America by the end of May," he said, adding it was "the type of collaboration between companies we saw in World War Two".

But the president acknowledged that supply was only one issue, with the nation needing to extend its vaccination drive and convince people to take the shots. "We need vaccinators, people who put the shots in people's arms, millions of Americans' arms," he said. "Great news, but stay vigilant," Mr Biden said. "It's not over yet."

Another key announcement was the pledge to give every teacher at least one shot by the end of March, and speed up the reopening of schools. But on a general reopening, he was more cautious, saying he was unsure when a return to normal would be possible, although he did then say before "this time next year". 

What are the states doing on reopenings?

Some are now relaxing rules, despite a warning from top federal health officials last week not to ease up. Mr Biden repeated that, saying: "We cannot let our guard down now or assure that victory is inevitable. We can't assume that." The governor of Texas on Tuesday issued an executive order, effective from 10 March, which rescinds most of the coronavirus measures he imposed earlier in the pandemic. Greg Abbott lifted the regulation ordering people to wear masks and said businesses would be allowed to resume full capacity next week,

"It is now time to open Texas 100%," the Republican said. "Too many small business owners have struggled to pay their bills. This must end." He said that with increased vaccinations and improved treatment for Covid-19, the state was "in a far better position now". The Democratic party in the state said the "crazy" move would throw away all of the gains.

Mississippi has followed Texas in removing the order on mask wearing, but it will come into effect even earlier - from Wednesday. Other states, including Michigan and Louisiana, have also announced relaxation of some rules. Michigan, which has a Democratic governor, is to ease capacity limits on restaurants, and on public and residential gatherings.