If you work with metal, welding, or in industrial settings, there is a rare but serious health condition you should be aware of: welder's anthrax. While the name sounds alarming, understanding what it is, who is at risk, and how to protect yourself can make all the difference.

At Crestwood General, we are committed to providing clear, practical health information for workers and employers. This guide explains welder's anthrax in straightforward terms, so you can stay informed and stay safe.

What Is Welder's Anthrax?

Welder's anthrax is a newly recognized, rare, and often severe disease that affects metalworkers, particularly welders. Despite its name, it is not classic anthrax. Instead, it is a form of pneumonia caused by bacteria that produce anthrax-like toxins.

The bacteria involved are closely related to Bacillus anthracis (the cause of traditional anthrax) but are slightly different. Both conditions are treated similarly, yet they affect different groups of people and arise from different exposures.

The Centers for Disease Control and Prevention (CDC) first identified welder's anthrax in 1994. Between 1994 and 2024, nine cases were diagnosed in the United States. All patients were metalworkers, eight of whom were welders, and all worked in Texas or Louisiana. Every patient required hospitalization, and those who survived initial emergency care were admitted to intensive care. Tragically, six of the nine patients died. All received antibiotic treatment, and two survivors also received anthrax antitoxin.

Because welder's anthrax is newly recognized and not widely understood, some cases may have been missed. Healthcare providers may not always know a patient's occupation or consider this diagnosis, which can delay critical treatment.

Recognizing the Signs and Symptoms

People diagnosed with welder's anthrax typically present with pneumonia and abnormal chest x-rays. Symptoms can resemble those of inhalation anthrax, a severe form of anthrax that affects the lungs.

Key symptoms to watch for include:
- Fever or chills
- Persistent cough
- Shortness of breath or difficulty breathing
- Coughing up blood

These symptoms can develop quickly and worsen rapidly. If you are a metalworker or welder and experience any of these signs, seek medical attention immediately.

Who Is at Risk?

All confirmed cases of welder's anthrax have occurred in metalworkers, with welders representing the majority. Most cases have been reported in U.S. Gulf Coast states, including Alabama, Florida, Louisiana, Mississippi, and Texas.

Researchers believe the disease may be linked to inhaling metal fumes and iron oxide particles generated during welding. Workers exposed to metal fumes and mineral dusts face an increased risk of pneumonia and respiratory complications. Metal fumes may create conditions that allow bacteria to grow more easily, adhere to lung tissue, or evade the immune system.

Notably, soil around welding sites has been found to contain higher levels of iron, which could influence bacterial behavior. However, more research is needed to fully understand how these environmental factors contribute to disease development.

How to Protect Yourself: Prevention Strategies

Preventing welder's anthrax starts with awareness and proactive workplace safety measures. The Occupational Safety and Health Administration (OSHA) requires employers to inform and train workers about potential hazards and safe practices under the Hazard Communication Standard.

Employers can use the hierarchy of controls—a proven framework for reducing workplace risks—to help prevent exposure.

Elimination and Substitution

Use less toxic welding methods or consumables when possible
Keep welding surfaces clean and free of coatings, dirt, or dust that could generate harmful exposures

Engineering Controls

Install and maintain ventilation systems to remove fumes and gases from the work area
Position local exhaust systems to draw contaminants away from workers
Do not rely on outdoor work or natural drafts alone for adequate ventilation

Administrative Controls

Maintain a clean, dust-free worksite
Clean regularly using vacuums equipped with HEPA filters or wet cleaning methods
Avoid using compressed air, dry sweeping, or dry brushing, which can stir up dust
Implement dust control programs in outdoor or semi-outdoor work areas
In high-traffic zones, apply water or dust-suppressing compounds to roadways and surfaces to reduce airborne particles (but never apply these near active welding due to electrocution risk)

Personal Protective Equipment (PPE)

When other controls cannot fully reduce exposure, PPE provides an essential additional layer of protection:
- Wear coveralls and work boots to prevent skin and clothing contamination
- Use NIOSH-approved respirators when working in areas with potential exposure to contaminated dust or fumes

For more guidance on respiratory protection, visit the National Institute for Occupational Safety and Health (NIOSH).

Treatment and Recovery: Why Timing Matters

People with welder's anthrax generally receive the same treatments as those with classic anthrax, including:
- Prompt administration of appropriate antibiotics
- In some cases, anthrax antitoxin to neutralize toxins

The sooner treatment begins, the better the chances of recovery. Unfortunately, many fatalities have occurred because the disease was not recognized early, delaying life-saving care.

If you are a metalworker or welder and develop respiratory symptoms, tell your healthcare team about your occupation and work location—especially if you work in a Gulf Coast state. This information can help providers consider welder's anthrax in their evaluation and order appropriate tests.

What to Do If You Suspect Welder's Anthrax

If you think you may have welder's anthrax:
1. Seek medical care immediately
2. Inform the healthcare team that you work as a metalworker or welder
3. Share details about your work environment, including location and tasks
4. Follow medical advice regarding testing and treatment

Early recognition and intervention are critical. Do not wait to see if symptoms improve on their own.

Resources for Workers and Employers

The Bottom Line

Welder's anthrax is rare but serious. Metalworkers, especially welders in Gulf Coast states, should be aware of the risks and take proactive steps to protect their health. Understanding the symptoms, communicating your occupation to healthcare providers, and following workplace safety protocols can save lives.

Prevention is always the best strategy. Employers should prioritize hazard assessments, engineering controls, and worker training. Workers should use recommended PPE and report symptoms early.

For more practical, easy-to-understand health and safety guidance tailored to your workplace, visit Crestwood General. Your health is worth protecting, and being informed is the first step toward staying safe.