The Cambodian boy fungus has been the source of a resurgence of infections and a deadly pandemic in Southeast Asia.
The fungus, which is typically found in Vietnam, has killed more than 200,000 people since it first arrived in Cambodia in 2002.
The disease has spread from the countryside into cities and has killed hundreds of thousands.
The U.S. Centers for Disease Control and Prevention on Monday called the boy fungus the most lethal pandemic ever in Southeast Asian history.
In the past, the fungus had a relatively short life cycle, and the disease was typically not transmitted through direct contact with infected individuals, said CDC Director Tom Frieden.
The boy fungus can be transmitted through close contact with an infected person, such as touching an infected glove or mouth, or by sharing contaminated clothing or utensils, such to food or drinking water.
Frieden said this year’s outbreak was a harbinger of things to come.
It is expected to continue for several months.
The virus has not yet killed anyone from Cambodia, but it is causing more deaths than the total of the last six pandemics combined, said Dr. Daniela Bui, an infectious disease specialist at the University of Maryland.
The country is now seeing an increase in cases of the boy syndrome, a form of the fungus that can cause severe respiratory and gastrointestinal infections, and severe neurological and other symptoms.
The United Nations World Health Organization says more than 10 million people have been infected with the boy or boy syndrome.
The WHO says more children will be infected than in previous years.
The first cases of boy syndrome in Cambodia were reported in the fall of 2017, according to the World Health Organisation.
The number of cases has steadily risen since then, but the country has yet to report a new case in February 2018.
The new cases, which are thought to be more serious than the ones from the previous outbreak, are still relatively small, but they represent an increase of more than 20,000 from the current count.
WHO officials say the boy is one of the more challenging cases to track because the virus has evolved so rapidly.
It also is not known exactly how many people in Cambodia have been affected.
The World Health Assembly said the boy can cause brain damage, respiratory problems and death if not treated properly.
The outbreak has affected nearly all of Cambodia’s major cities, including Phnom Penh, Siem Reap, and Phnom Somsar.
Phnom Anak, a capital of Cambodia, has been hit hardest.
The city is the only city that is still functioning after it was destroyed in a deadly explosion that killed 1,800 people in January.
About a third of Phnom Reap’s population has been affected, including the mayor, and many other workers are in temporary shelters.
In Siem Reac, which has more than 100,000 residents, more than 8,000 are living in shelters, according the city’s deputy mayor.
The majority of residents are women and children.
The government has not reported any deaths in Phnom Peng province, which includes the southern Cambodian province of Chiang Rai.
The UN has said the epidemic has been spreading at a rapid pace since it arrived in the country, and there are fears that it could infect more than one million people.
A major part of the population has contracted the fungus, but few people have died.
About 3,500 people have contracted the boy’s disease, which can cause seizures, severe infections and severe respiratory distress.
The epidemic is expected have continued for months, and it is likely that many people will die from it in the coming months.
More: The boy or girl fungus is spread through contact with contaminated surfaces and clothing, and is very contagious.
The symptoms include fever, headache, fatigue, difficulty breathing, diarrhea, abdominal pain and joint pain.
The CDC says people who have been exposed to the fungus should avoid close contact, wear long sleeves, wear masks, and wear gowns when going outside.
CDC officials say they are urging people to limit the time they are outdoors, especially in the warmer months.
They recommend wearing long-sleeved shirts, pants and long pants to reduce the chances of getting infected.
The boy or child fungus is extremely contagious.
Its symptoms include headache, fever, fatigue and difficulty breathing.
CDC officials are urging all people who live in a rural area to wear long-soled shoes, pants, long pants, and long sleeves when outdoors.
Health workers and people who work in rural areas should wear gloves, hats, and face shields when caring for patients who have the fungus.