Professor Paul Hunter, head of the health protection at the U.K.'s University of East Anglia, told delegates at the Festival of Science being held in the city of Norwich, east England said global warming are causing organisms to migrate.
He presented a research tracking the movement of disease-casing organisms in Europe and North America which found that ocean swimmers have been infected with illnesses normally associated with warmer waters.
He calls on governments in Europe to step up efforts to monitor the spread of these disease particularly big killers such as malaria found in Africa.
He said, "There are already significant indications of disease burden occurring in Europe as a result of climate change."
Independent research showed that one organism identified as Vibrio vulnificus, which can cause severe illness and even death to humans, have been monitored to be on the move. The organism usually thrives in warm waters, such as in the Gulf of Mexico.
But recent study show the organism is now found in the north such as the Baltic Sea in Europe. It is also suspected as the cause of death of one person in Denmark.
Hunter also cited the case of 100 holidaymakers in Italy which have fallen ill after coming into contact with an organism Ostreopsis ovata which was not normally found in Italian waters.
He adds, that the Congo Crimea Haemorrhagic Fever, which causes bleeding from the skin, mouth and nose, had also began to appear in areas where it was previously unknown.
Because of climate change, Europe is now experiencing milder winters which enables such organisms to survive in traditionally cold areas.
