KATHMANDU (NYTIMES) - The Covid-19 outbreak in India has spilled across the border into Nepal, where health officials have warned that hospital beds are unavailable, vaccines are running short and the number of new infections is rising faster than overwhelmed clinics can record them.

The situation is so dire in Nepal that the Health Ministry in the Himalayan nation issued a statement on Friday (April 30) in which, in effect, it threw up its hands.

"Since coronavirus cases have spiked beyond the capacity of the health system and hospitals have run out of beds, the situation is unmanageable," the ministry said after the government recorded 5,657 new infections on Friday, the highest daily total since October.

And with more than one-third of tests returning a positive result, officials worry that the actual number of cases is much higher. Nepalis who are infected but have only minor symptoms have been told to stay home to keep hospitalisations down.

Experts believe the outbreak is being fuelled by Nepali migrant workers who returned home in recent weeks from India as lockdowns were imposed there.

The 1,760km border between the countries is porous, and hardly any of the returnees were tested for the coronavirus or placed into quarantine.

Nepal has since closed its border crossings with India, but the virus is already spreading. In early March, Nepal was recording fewer than 100 cases a day. Now the daily average exceeds 4,000 reported cases, according to a New York Times database.

At the same time, Nepal's vaccination drive has slowed. India donated one million doses of the AstraZeneca vaccine, and Nepal signed an agreement to buy two million more from an Indian manufacturer, the Serum Institute of India. But India curtailed vaccine exports last month after its outbreak worsened, and Nepali officials say that the company has shipped only half the amount.

As a result, after 1.7 million people out of a population of nearly 30 million received the first dose of the vaccine, only 380,000 have received a second shot.

In late March, China donated 800,000 doses of its Sinopharm vaccine. Nepalis flocked to vaccination centres, prompting some officials to worry that the crowds could spread the virus.

The government has now imposed a new two-week lockdown, bringing vaccinations to a halt.