ISLAMABAD- British and American researchers predicted that global warming could result in the spread of the deadly disease ‘malaria’ in places where it was practically unknown. Writing in the journal Science, the researchers said that they found what they called "indisputable evidence" of the effects of climate change.

Working in Colombia and Ethiopia, they discovered that malaria increased to higher elevations in warmer years and reached lower levels when the temperature was cooler.

They added that if the planet kept getting warmer, people living in higher level tropical regions would be vulnerable to Malaria.

According to World Health Organization, Malaria kills more than 600,000 people a year with Africa in the hit list. Mosquitoes spread the disease.  It can be prevented by insecticides, mosquito nets and medicine.