The push comes as the World Health Organization also raised concerns that China’s 1.4 billion population was not adequately vaccinated, and the United States offered to help China deal with a surge in infections.

Beijing last Wednesday began dismantling its tough ‘zero-COVID’ controls, dropping testing requirements and easing quarantine rules that had caused mental anxiety for tens of millions and damaged the economy.

The pivot away from President Xi Jinping’s signature “zero-COVID” policy followed unprecedented widespread protests against it. But, WHO emergencies director Mike Ryan said COVID-19 infections were exploding in China well before the government’s decision to phase out its stringent regime.

“There’s a narrative at the moment that China lifted the restrictions and all of a sudden the disease is out of control,” Ryan told a briefing in Geneva.

“The disease was spreading intensively because I believe the control measures in themselves were not stopping the disease. And I believe China decided strategically that was not the best option anymore.”

There are increasing signs of chaos during China’s exit from the zero-COVID policy — with long queues outside fever clinics, runs on medicines, and panic buying across the country.

One video posted online on Wednesday showed more than 10 people, wearing thick winter clothes, hooked up to intravenous drips as they sat on stools on the street outside a hospital clinic in central Hubei province. Reuters verified the location of the video.

For all its efforts to quell the virus in the three years since it erupted in the central city of Wuhan, China may now pay a price for shielding a population that lacks “herd immunity” and has low vaccination rates among the elderly, analysts say.

“Authorities have let cases in Beijing and other cities spread to the point where resuming restrictions, testing, and tracing would be largely ineffective in bringing outbreaks under control,” analysts at Eurasia Group said in a note on Thursday.

“Upward of 1 million people could die from COVID-19 in the coming months.”

China has said around 90 percent of its population is vaccinated and its National Health Commission (NHC) on Wednesday announced it would roll out the second COVID-19 vaccine booster shots for high-risk groups and elderly people over 60 years old.

China reported 2,000 new symptomatic COVID-19 infections for Dec. 14, compared with 2,291 a day. The official figures have become an unreliable guide as less testing is being done in the country.

NHC spokesperson Mi Feng said on Wednesday it was necessary to accelerate the promotion of vaccinations, according to comments reported by state media.

Vaccinations in China have been ramping up in recent days. The latest official data shows it administered 1.43 million shots on Tuesday, well above rates in November of around 100,000 — 200,000 doses a day.

In total, it has administered 3.45 billion shots, the data shows.

But citing low vaccination rates among the elderly, one care home in Shanghai said on Wednesday it was barring visitors and non-essential deliveries as well as stockpiling medicines, tests kits and protective equipment.

“We are racking our brains on how to ensure the safety of your grandparents,” the Yuepu Tianyi Nursing Home wrote in a letter posted on its official WeChat account page.

Beijing has been largely resistant to western vaccines and treatments, having relied on locally-made shots.

Pfizer’s oral COVID-19 treatment Paxlovid is one of the few foreign ones it has approved.

The treatment, however, has only been available in hospitals for high-risk patients, but signs have appeared in recent days that it may soon be available to the wider public. China Meheco Group Co. Ltd. said on Wednesday it signed a deal to import the US drugmaker’s treatment.