Last month, Beijing abruptly began dismantling its "zero-Covid" containment policy of lockdowns and mass testing, three years after the coronavirus first emerged in the city of Wuhan.
As Covid-19 overwhelms Chinese hospitals and crematoriums, officials have insisted that the wave is "under control" despite acknowledging that the true scale of infections is "impossible" to track.
Rabat on Sunday said they would “prohibit access to the territory of the Kingdom of Morocco to all travellers, regardless of their nationality, coming from the People's Republic of China.”
The authorities added that “this exceptional measure in no way affects the sincere friendship between the two peoples nor the strategic partnership between the two countries, to which the Kingdom remains firmly attached.”
Australia's health minister on Sunday cited Beijing's "lack of comprehensive information" about Covid-19 cases as the reasoning behind the travel requirement, which will take effect on January 5. The move will "safeguard Australia from the risk of potential new emerging variants," he said.
In recent days, Canada, the US, UK, France, Italy, Spain, Japan, South Korea and Taiwan have also imposed either a negative Covid test requirement or testing upon arrival for travellers from China.
Canada cited "the limited epidemiological and viral genomic sequence data available" on recent cases in China for its negative test demand.
Meanwhile, Morocco moved to ban all arrivals from China on Saturday, "to avoid a new wave of contaminations in Morocco and all its consequences."
The flurry of global travel restrictions began as countries anticipated a surge in Chinese visitors after Beijing announced that mandatory quarantine for inbound passengers would end on January 8.
The World Health Organisation has called the precautionary measures "understandable" in light of the lack of outbreak information provided by Beijing.
But the European branch of the International Airports Council ― which represents more than 500 airports in 55 European countries ― said the restrictions were not justified or risk-based.
European countries will meet next week to discuss a joint response to the issue, with incoming EU presidency holder Sweden saying it was "seeking a common policy for the entire EU when it comes to the introduction of possible entry restrictions".
While a few major Chinese cities seem to be emerging from the current wave of infections, under-resourced smaller cities and rural areas have been hit especially hard.
In response to the outbreak, Taiwanese President Tsai Ing-wen said on Sunday that she was "willing to provide necessary assistance based on humanitarian concerns," but did not specify what kind of aid might be extended to Beijing, which considers the self-ruled island a breakaway province.
But in his televised New Year address, Chinese President Xi Jinping struck an optimistic note.
"Epidemic prevention and control is entering a new phase ... Everyone is working resolutely, and the light of hope is right in front of us," Mr Xi said, in a speech on Saturday.
Despite the jump in infections, large crowds still gathered for New Year's Eve celebrations in Shanghai and Wuhan, although some social media users said the festivities seemed more subdued than in past years.
China on Sunday reported more than 5,100 new infections and one death linked to Covid-19 out of its population of 1.4 billion ― but commentators say the figures appear to be out of step with the reality on the ground.