Newer vaccines required for the newest strains?: China warns new COVID-19 outbreak is likely to spread

China warns new COVID-19 outbreak is likely to spread

Oct 24 2021

A resident in Zhangye in China's northwestern Gansu province undergoes a nucleic acid test for the Covid-19 coronavirus on Oct. 21, 2021.

China’s latest COVID-19 outbreak is increasingly likely to spread further, a health official said on Sunday, as authorities urged all regions to step up monitoring and called for a reduction in travel across provinces.

More than 100 locally transmitted cases have been confirmed over the last week across 11 provincial areas, with most linked to 13 different tour groups.

There is increasing risk that this outbreak will spread further, helped by “seasonal factors,” Mi Feng, spokesman at the National Health Commission, told reporters on Sunday.

The Delta variant causing the outbreak is also highly transmissible, said commission deputy director Wu Liangyou, adding that sequencing showed it to be different from the source of an earlier outbreak, and suggesting that the new cases came from a new source.

Authorities have banned travel agencies from arranging cross-provincial tours that involve regions deemed of higher virus risk, and has imposed nationwide suspension on some travel services linking multiple tourist attractions.

The capital Beijing has said it will impose strict restriction on travels to the city by people who have been to counties with at least one infection.

Health authorities also said on Sunday that about 75.6 per cent of China’s population had received complete vaccine doses as of Oct. 23, approximately over 1.068 billion people.

China is giving booster shots to adults whose last dose was at least six months earlier, with priority groups including essential workers, older people and those with weaker immune systems. Data showed antibodies elicited by vaccines, including the most-used shots from Sinovac and Sinopharm, declined within a month.

Wang Huaqing, chief expert for the immunization program at the Chinese Centre for Disease Control and Prevention, said China cannot keep giving people booster shots indefinitely.

“Even if it needs to be strengthened later, the number of boosters is limited,” Dr. Wang told the briefing. “We hope in the future there will be better vaccines and better vaccination procedures to achieve solid protection among the public.”