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China’s inhalable Covid vax may boost antibodies 300-fold

A similar clinical trial was conducted by US researchers on a heterologous booster shot regimen with three approved vaccines -- one adenovirus-based vaccine by Johnson & Johnson and two mRNA vaccines by Moderna and Pfizer. The results showed that heterologous regimen enhances immunity.

Blinken, Qatari FM hold talks Afghanistan

Secretary Blinken thanked Qatar for its strong partnership on regional security issues and assistance to safely transit U.S. citizens, Lawful Permanent Residents, and Afghans at risk,