Vaccine trial

He said it could be a side-effect of the vaccine

The COVID-19 vaccine developed by China's Sinovac Biotech has an efficacy of 83.5 percent based on the final results of Phase III trials, Turkish researchers said on March 3, a downward revision from a preliminary finding of 91.25 percent.

The United Kingdom has approved another coronavirus vaccine for use, weeks after the country became the first in the world to start inoculating its citizens.

Tests on a Turkish-made coronavirus vaccine are going smoothly, with none of the volunteers testing the vaccine showing any side effects, said the rector of a university in central Turkey on Nov. 23. 

Mustafa Çalış, the rector of Erciyes University in the Kayseri province, said 44 volunteers have been testing the ERUCOV-VAC vaccine.