Delta variant spreading like ‘wildfire’ in Karachi; more restrictions on the cards By Provincial Task Force to meet today to review the pandemic situation. Sindh government has started taking precautionary measures to meet the challenge. KARACHI: The provincial government is likely to take strict measures in the metropolis to curb the fast spread of the Delta variant, which now accounts for 92% of the infection cases, with the positivity ratio exceeding 23%. An official of the Sindh Health Department told The News that to contain the spread of the coronavirus in Karachi, some strict measures can be decided by the provincial government during the next meeting of the Provincial Taskforce on COVID-19, which is scheduled to meet today.