Alarm bells started ringing in Islamabad over the Covid-19 situation in Karachi where positive cases surged to 30.58 per cent as 1,704 people tested positive when 5,571 tests were conducted at 24 testing facilities in the city over the past 24 hours, Sindh health department officials said on Tuesday.“The positivity of cases is continuously rising in Karachi, and we are still far from peak of this wave. With an alarmingly high number of Covid-19 cases, hospitalisation has reached record...