"south-africa"

The pause means the online enrollment system has been closed for the 60,000-patient clinical trial while the independent patient safety committee is convened.

The US is the worst-hit country with the world's highest number of cases and deaths at 7,761,637 and 214,767, respectively, according to the CSSE.

The US is the worst-hit country with the world's highest number of cases and deaths at 7,455,184 and 210,155, respectively, according to the CSSE.