The Athens Medical Association (ISA) has expressed concern about the spread of West Nile virus and is urging the public to take all necessary precautions.
In a statement, it noted that there were 316 reported cases of the mosquito-borne infection last year, and that 50 of them were fatal. Most of the deaths, it said, were recorded in Attica.
Heralding the start of the mosquito season in Greece, the country's new National Organization for Public Health (EODY) - which replaces the Center for Disease Control and Prevention (KEELPNO) - on Thursday urged the public to protect themselves and their families from West Nile and other diseases transmitted by mosquitoes.
Fleas in Arizona have tested positive for the bubonic plague, prompting health officials to advise residents to "take precautions" to reduce their risk of becoming infected with the disease, which killed millions during the Middle Ages.
Navajo County confirmed on Friday that fleas in the area have tested positive for the disease, once known as 'the Black Death.'