BEIJING, Feb. 22 (Xinhua) -- The following is a summary of published science and technology news of China.

COVID-19 VACCINES

China has approved 16 domestically made COVID-19 vaccines for clinical trials, six of which have entered phase 3, according to the latest data from the National Medical Products Administration.

Two inactivated COVID-19 vaccines from China have hit the market on a conditional basis: a vaccine from China National Biotec Group affiliated with Sinopharm, and the CoronaVac vaccine developed by Sinovac Biotech. They received their respective approvals from the administration on Dec. 30, 2020, and Feb. 5 this year.

SPACE TRACKING SHIP

China's space tracking ship Yuanwang-3 on Saturday set sail for the Pacific Ocean from a port in east China's Jiangsu Province for upcoming maritime monitoring missions.

It is the ship's first voyage this year. Commissioned on May 18, 1995, Yuanwang-3 is a second-generation Chinese space tracking ship.

INFLUENZA VIRUS AND COVID-19 INFECTION

Chinese scientists have published a paper in the journal Cell Research showing that influenza A virus can aggravate COVID-19 infection in cell and animal tests.

The study by researchers from Wuhan University in central China's Hubei Province provides strong experimental evidence concerning the coinfection of the two respiratory viruses. It reported for the first time that influenza A virus can enhance subsequent COVID-19 infection in cells and mice. Enditem

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