A passenger wearing protective gear is seen at a train station in Beijing on Wednesday. AFP

The announcement adds to abrupt changes that are rolling back some of the world’s strictest anti-virus controls as President Xi Jinping's government tries to reverse an economic slump. Rules that confined millions of people to their homes kept China’s infection rate low but fuelled public frustration and crushed economic growth.

The latest decision could send free-spending Chinese tourists to revenue-starved destinations in Asia and Europe for Lunar New Year, which begins on Jan.22 and usually is the country's busiest travel season. But it also presents a danger they might spread COVID-19 as infections surge in China.

Travel services companies Trip.com and Qunar said international ticket bookings and searches for visa information on their websites rose five to eight times after Tuesday's announcement. Top destinations included Japan, Thailand, South Korea, the United States, Britain and Australia.

Japan, India, South Korea and Taiwan have responded to the Chinese wave of infections by requiring virus tests for visitors from China. China stopped issuing visas to foreigners and passports to its own people at the start of the COVID-19 pandemic in early 2020.

The National Immigration Administration of China said it will start taking applications from Jan.8 for passports for tourists to go abroad.

The agency said it will take applications to extend, renew or reissue visas but gave no indication when they might be issued to first-time applicants.

China will "gradually resume” admitting foreign visitors, the agency said. It gave no indication when tourist travel from abroad might resume.

The changes will "create better conditions for orderly cross-border travel" and "bring more benefits to global economic development,” said a Foreign Ministry spokesman, Wang Wenbin.

China will "work with all countries” to "restore safety and stability to global industrial and supply chains and promote world economic recovery,” Wang said.

Health experts and economists expect the ruling Communist Party to keep limits on travel into China until at least mid-2023 while it carries out a campaign to vaccinate millions of elderly people. Experts say that is necessary to prevent a public health crisis.

During the pandemic, Chinese with family emergencies or work travel deemed important could obtain passports, but some students and businesspeople with visas to go to foreign countries were blocked by border guards from leaving. The handful of foreign businesspeople and others who were allowed into China were quarantined for up to one week.

Before the pandemic, China was the biggest source of foreign tourists for most of its Asian neighbors and an important market for Europe and the United States.

The government has dropped or eased most quarantine, testing and other restrictions within China, joining the United States, Japan and other governments in trying to live with the virus instead of stamping out transmission.

Japan and India have begun requiring virus tests for travelers from China. South Korea tests all visitors with elevated temperatures. South Korea says anyone who tests positive will be quarantined at home or in a hotel for a week.

South Korean officials said possible additional measures for arrivals from China will be announced on Friday. US officials, speaking on condition of anonymity to relate internal discussions, said Washington is considering taking similar steps.

Taiwan on Wednesday announced visitors from China will be tested starting from Jan.1.

Hong Kong authorities said on Wednesday they would scrap some of the city's COVID-19 restrictions, including PCR tests for all inbound travellers and vaccination requirements to enter certain venues. The easing comes as the southern city prepares for a reopening of borders with mainland China next month.

Associated Press