The global coronavirus pandemic could be over by June if countries mobilise to fight it, a senior Chinese medical adviser said on Thursday, as China declared the peak had passed there and new cases in Hubei fell to single digits for the first time.

Around two-thirds of global cases of the coronavirus have been recorded in China’s central Hubei province, where the virus first emerged in December. But in recent weeks the vast majority of new cases have been outside China.

Chinese authorities credit strict measures they have taken, including placing Hubei under near total lockdown, with preventing big outbreaks in other cities, and say other countries should learn from their efforts.

“Broadly speaking, the peak of the epidemic has passed for China,” said Mi Feng, a spokesman for the National Health Commission. “The increase of new cases is falling.” Zhong Nanshan, the Chinese government’s senior medical adviser, said at a news conference on Thursday that as long as countries take the outbreak seriously and are prepared to take firm measures, it could be over worldwide in months.