Title : The boys trapped in the Thailand cave could face an unusual disease
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The boys trapped in the Thailand cave could face an unusual disease
As the rescue efforts for the 12 boys and their coach trapped in a flooded Thailand cave have continued, the world has been hoping for the entire group's safe return to the surface.
But after surviving the weather conditions, severe body stresses and unimaginable emotional distress of being trapped for days in dark, wet caverns, the 13 have more challenges ahead. All that time inside the caverns has exposed them to a dangerous and rare infection, often called "cave disease."
Officials said Tuesday morning local time at a press conference that at least two of the first four boys rescued are suffering from lung infections based blood tests, and all of them likely are infected though their tests are pending. However, none of them have a fever.
What is 'cave disease?'
Cave disease, also called speleonosis, is an infection with a fungus called Histoplasma capsulatum. It was first described in the 1940s as an “unusual” lung disease affecting a group of men camping in an abandoned storm cellar. The fungus is naturally found all over the world, thriving in settings ranging from the caves of Asia to the fertile riverbanks of the Mississippi River, according to the U.S. Centers for Disease Control and Prevention. It grows in soil, aided by nutrients it gets from bat and bird droppings.
How is it detected?
Although Histoplasmosis is found in the environment, a person has to be tested to determine if they have the disease. Urine, lung, other tissue and blood samples can help detect the disease and X-rays or CT scans may also be needed.
In additional to physical exams, medical professionals will ask about personal health, travel history, including any time spent in caves, and symptoms.
How is it transmitted?
Anything that disturbs the ground like digging, or even just walking, can spread the fungus and the disease, according to the CDC. The fungus becomes airborne through its spores, which are so small they are undetectable to the human eye. It can then contaminate the air and enter the lungs of unassuming visitors.
Caves are known to be special breeding grounds for Histoplasmosis, with unique environments that can provide an ideal home for the fungus. With more than two million people each year exploring caves, or spelunking, it is becoming an increasingly common cause of infection.
Although the disease is transmitted via the air, it is not contagious from person to person. Some pets, like dogs and cats, can also become infected.
What are its signs and symptoms?
Detecting cave disease can be difficult and depends on many factors, including a person's baseline health and how much exposure he or she had to the fungus. A healthy person who’s been exposed may show no signs or symptoms at all.
Though most people exposed to Histoplasmosis don't get sick, those who do may look like they just have the flu with symptoms including fever, cough, extreme tiredness, chills, headache, body aches or chest pain. These symptoms usually appear between three and 17 days after a person breathes in the fungus.
A person with a weaker immune system, such as someone with uncontrolled HIV or undergoing cancer treatment, may develop more severe symptoms, such as confusion, as the disease spreads from the lungs to other parts of the body like the brain. Severe infections can cause death.
Treatment and preventing future cases
Cave disease resolves itself over time, without medication, for most people. However, for more severe symptoms or those with weaker immune systems, some antifungal medications may be required to treat the infection. Treatment can range from three months to one year.
Because the fungus is commonly found in many areas, it can be hard to avoid breathing in the spores. One way to decrease the risk is to avoid disturbing any surfaces with bird or bat droppings.
Anyone who chooses to explore caves can contact local cavers and public health departments to determine which caves are at higher risk for Histoplasmosis and consider wearing specialized dust-mist masks to minimize inhaling spores.
People with weakened immune systems should avoid cave exploring, which is considered a high-risk activity for them.
Petrina Craine is an emergency medicine resident physician in Oakland, California working in the ABC News Medical Unit.
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