The positivity rate of Covid-19 cases reached up to 20.34 per cent in Karachi on Friday where 1,314 people tested positive for the infectious disease with 867 patients hospitalised at various health facilities, of whom 562 were on high flow oxygen and 177 on low flow oxygen.Sindh Chief Minister Syed Murad Ali Shah shared the information to this effect on Friday. He said another 25 people died of Covid-19 in Sindh during the previous 24 hours, raising the death toll to 5,697 in the province. In...