Fungal Foes on the Rise: Valley Fever and the Alarming Spread of Drug-Resistant Infections

A New Global Health Risk on the Rise
Skin allergy on a person's arm
6.5 million people worldwide develop invasive fungal infections every year, according to the WHO. Fungal infections are responsible for approximately 3.8 million deaths annually, making them a significant yet underreported global health burden.Representative Image: FreePik
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Fungal diseases, once rare and localized, are now becoming a serious worldwide health issue. One of the most lethal is Coccidioides, the fungus that causes Valley Fever, a condition that was previously confined to portions of the American Southwest but is now spreading throughout the US and around the world. What's causing alarm among experts is that even healthy individuals are falling ill.

What is Valley Fever?
Valley Fever is a respiratory illness caused by breathing in spores of the Coccidioides fungus, which lives in dry soil. When disturbed, during yard work, construction, or wildfires, the spores become airborne and make it difficult to breathe. Symptoms often resemble the flu, but they can progress to pneumonia or, in severe cases, spread to the brain.

Why is Valley Fever spreading now?

Climate change is a key principle. Climbing temperatures, powerful dust storms, and recurrent wildfires provide perfect weather for fungal spores to disperse far and wide and live longer. Whereas previously these fungal spores were mostly limited to California's San Joaquin Valley and portions of Arizona, Valley Fever has been diagnosed in over 20 U.S. states.

Limited Treatments, Growing Resistance

The World Health Organization estimates 6.5 million individuals experience invasive fungal infections annually, resulting in approximately 4 million fatalities. In contrast to bacterial infections, which may be treated using a broad selection of antibiotics, there are only 17 antifungal agents available, many of which are accompanied by side effects like liver toxicity and renal damage.

Mother checking body temprature on thremoeter
Candida auris, a multidrug-resistant fungus, has been detected in over 50 countries and is listed as a critical priority pathogen by WHO. In 2022, the U.S. CDC reported a 95% increase in Candida auris cases compared to 2020, particularly in hospitals and long-term care facilities.Representative Image: FreePik

Worrisome also is the increasing occurrence of fungi that are drug-resistant. Candida auris, for instance, can stick to hospital surfaces and is nearly impossible to cure with antifungals, which makes it a healthcare infection of great concern.

Who's at risk?

Although individuals with weakened immune systems continue to be most at risk, e.g., cancer patients, transplant patients, or chronic lung disease sufferers, new infections are increasingly infecting healthy adults too. Being outdoors in dusty conditions is enough to cause infection.

Need for innovation

Creating effective antifungal drugs is especially tricky. Fungi are more biologically close to humans than bacteria, so it is hard to kill them without damaging human cells. New drugs such as Olorofim are in the pipeline, but they remain out of reach, and more research is urgently required.

What can be done?

Experts call for a multi-faceted approach:

  • Training healthcare workers to diagnose fungal infections early

  • Increasing public awareness of the risks of airborne fungal spores

  • Investing in new therapies with fewer side effects

  • Enhancing diagnostics for quicker and more precise detection

Final thoughts

Experts say that as Valley Fever and other fungal threats expand, awareness is our best defense. Although the emergence of drug resistance is alarming, scientific advancement and global attention provide hope. By making research, public education, and innovation our priorities, we can remain ahead of this new threat.

(Input from various sources)

(Rehash/Muhammad Faisal Arshad/MSM)

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