Authorities said on Monday another 309 people died as a heatwave continued to grip Pakistan's Sindh province. The searing temperatures have claimed 445 people since Saturday, according to a senior provincial government official. Sindh Health Minister Jam Mehtab Dahar said the government had declared a medical emergency in hospitals as temperatures reached 109 degrees. Karachi remains one of the hardest hit areas, with 301 of the 309 deaths reported on Monday.
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