Experts believe that changes in behavior waning immunity from prior infections and the spread of new variants are all contributing to the dramatic

India on Sunday reported more than 100,000 new cases of the coronavirus, a grim measure achieved by only the United States and briefly Brazil, and a sign that the infections in the nation of 1.3 billion could be spinning out of control.

India, which has one of the world’s largest vaccine-manufacturing capacities, is immunizing citizens at a rate of 2 million a day but has not made significant headway, with just 5 percent of the population having received a first dose. India is also slowing down its vaccine exports in the face of domestic demand, with potentially dire consequences for other countries.

Experts believe that changes in behavior, waning immunity from prior infections and the spread of new variants are all contributing to the dramatic rise in cases. In the western state of Maharashtra — the epicenter of the surge — a new “double mutant” variant has been detected in about 20 percent of cases.
Here are some significant developments:
The Biden administration said the United States will have enough coronavirus vaccine doses despite problems at a Baltimore manufacturing facility that will now be taken over by parent company Johnson & Johnson. More than 106 million people have received at least one coronavirus vaccine dose in the country.
Experts disagree on whether the United States is on the cusp of a “fourth wave” of infections or seeing the last gasps of the 14-month crisis.
Wisconsin’s vaccination program is a success, buoying the profile of Andrea Palm, once its top health official and now a candidate for No. 2 at the Department of Health and Human Services.
Several Canadian provinces are imposing new restrictions to blunt a resurgence of the coronavirus that is hitting more young people with severe illness than before.
The immunization program is stalling in Ivory Coast amid widespread vaccine hesitancy, while in Kenya there aren’t enough vaccines as the wealthy use connections to snap up the few doses available.
About 555,000 people have died in the United States of the coronavirus, and reported new cases of infection are rising steadily. There was a 5 percent increase over the past week.
Correction: An earlier version of this report said India was the second country to record 100,000 coronavirus cases in a day. It was the third. The error has been corrected.
The two schoolteachers had heard the vaccine was first-come, first-serve and had been waiting in front of the hospital since 5 a.m. They had been given numbers in line and let their thoughts drift ahead to the now-imminent moment for which they’d waited months.

Around noon, there was a sudden hubbub. A nurse appeared at the hospital’s gate and said the doses were finished. A crowd gathered. Some said they had seen the nurses sneaking in people through a back door, the teachers recalled later.

Amid the ensuing shouts from the crowd were denunciations of a more insidious plague here in Kenya: public services that work for those with connections and money and relegate everyone else to the back of the line.

“They have another door for their friends,” said Mary Njoroge, 58, one of the teachers.

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