Diplomatic Correspondent: President Xi Jinping on Monday stressed the importance of global cooperation on aeronautical technologies and sciences.

Xi made the remarks in a congratulatory letter to the 32nd Congress of the International Council of the Aeronautical Sciences, which will be held from September 6-10 in Shanghai.

In his letter, Xi noted that aeronautical science and technology is one of the fields that has developed most rapidly since the 20th century and had the greatest impact on human life and production.

"The world today is undergoing a profound scientific and technological revolution and industrial transformation, and aeronautical science and technology is facing unprecedented development opportunities," he said, adding that it is necessary and promising to carry out global cooperation in aeronautical science and technology.

Xi expressed hope that this congress will play an active role in promoting global aeronautical science and technology cooperation and bring more benefits to people around the world.

The 32nd Congress of the ICAS is hosted by the ICAS and organized by the Chinese Society of Aeronautics and Astronautics.

Another report adds:

A third dose of Sinovac Biotech COVID-19 vaccine can generate longer immune responses sooner and protect against new variants, according to a study led by Chinese researchers.

A third dose of the COVID-19 vaccine developed by Chinese company Sinovac Biotech can trigger longer immune responses sooner, and protect against more emerging variants, a new study led by Chinese researchers has found.

"Our findings rationalize the use of 3-dose immunization regimens for inactivated vaccines," said the study published on medRvix.org, a preprint website, on Sunday.

Researchers from the ChineseAcademy of Sciences, PekingUniversity and Sinovac Biotech jointly conducted the study.

Inactivated COVID-19 vaccines usually require two doses for full immunization, but the rapid spread of new variants and waning immunity over time have prompted calls for delivering a booster shot to vaccinated people.

The study recruited 22 recovered patients, six healthy participants and 38 volunteers who received either two or three doses of vaccines from Sinovac Biotech.

It found that compared with recovered people and people vaccinated with two doses, participants receiving three doses are more capable of warding off emerging variants, including the Beta strain and the Delta strain.

The study said a third dose administered 6 months after the second vaccination can lead to "enhanced neutralizing potency, breadth, and longevity of the immune response against SARS-CoV-2."