Calls for investigations into the World Health Organization (WHO) role in responding to the COVID-19 pandemic and a probe into the source of the virus in China dominated the opening of the World Health Assembly (WHA) today, held virtually and shortened to 2 days.Meanwhile, the global total passed 4.75 million cases today, with deaths reaching 317,515, according to the Johns Hopkins online dashboard.Pandemic probe support builds at WHAMore than 100 nations, including all European Union countries, are backing a WHA resolution that calls for an independent investigation into the COVID-19 pandemic, several news outlets reported.