Thailand has said it will start human trials by the end of the year on two coronavirus vaccines administered using a nasal spray, the Reuters news agency reports.
Developed by the National Center for Genetic Engineering and Biology, the vaccines are based on influenza and the adenovirus, and have already had promising results during trials on mice, a government spokesperson says.
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The human trials will also test protection against the Delta variant. If successful, it's aimed to be produced for wider use in mid-2022.
Thailand has two other home-grown vaccines due to start second-phase human trials this month. So far, it has relied on imported vaccines such as AstraZeneza and Sinopharm.
Just under 7% of Thailand's population of more than 6.6 million have been double vaccinated.