Just a day after reporting their first autochthonous dengue fever case in decades, the Japan Times reports on two additional cases of the mosquito borne illness.

Japan Image/CIA

Yesterday, it was reported that a teen girl from Saitama Prefecture contracted the virus locally. Now a man in Tokyo and a woman from Saitama Prefecture, both in their 20s reportedly contracted dengue, being the second and third cases.

All three patients attend the same school in Tokyo and government officials suspect they were infected after being bitten by mosquitoes in Yoyogi Park in central Tokyo.

The last indigenous case of dengue fever was reported in Japan in 1945. Japan sees scores of imported dengue cases annually from travelers to endemic areas. In 2013, they reported 249 cases.

Dengue fever is an infectious disease carried by mosquitoes and caused by any of four related dengue viruses. This disease used to be called “break-bone fever” because it sometimes causes severe joint and muscle pain that feels like bones are breaking.

People get the dengue virus from the bite of an infected Aedes mosquito. It is not contagious from person to person. For more infectious disease news and information, visit and “like” the Infectious Disease News Facebook page

There are three types of dengue fever in order of less severe to most: the typical uncomplicated dengue fever,dengue hemorrhagic fever (DHS) and dengue shock syndrome (DSS). Looking for a job in health care? Check here to see what’s available

The World Health Organization (WHO) estimates there may be 50–100 milliondengue infections worldwide every year. However, new research from the University of Oxford and the Wellcome Trust, using cartographic approaches, estimate there to be 390 million dengue infections per year worldwide.