Seven die as dengue grips Karachi.

KARACHI -- The deadly dengue virus has killed at least seven people in the metropolis, Sindh Minister for Information Sharjeel Inam Memon said Tuesday.

Despite rescue operations underway in flood-hit areas, there are many locations where people are still trapped in water and suffering from dengue and other vector-borne and water diseases.

Minister for Climate Change Senator Sherry Rehman had earlier indicated at least a 50% surge in the cases of dengue fever, especially in Karachi.

The federal minister said Karachi - where hundreds of dengue patients are being admitted to hospitals on a daily basis - is witnessing an "outbreak" of dengue.

Massive floods triggered by unprecedented monsoon rains and glacier melt have submerged a third of Pakistan while killing over 1,400 people and affecting the lives of 33 million since the month of June.

In Sindh alone, the death toll from the floods and rains has reached 638, Memon told a press conference today. Sindh remains the worst-hit province receiving 466% more rain than average in this year's monsoon.

UN Secretary-General Antonio Guterres visited the flood-affected regions last week and described the situation in...