Which of the following is a preventive measure for heat stress in deployed personnel?

• A. Vaccination against cholera
• B. Isolation of affected individuals
• C. Acclimatization
• D. Immediate deployment of antibiotics

Answer: (D)

Acclimatization is the preventive measure for heat stress. By gradually increasing exposure to hot conditions, the body adapts: sweating starts earlier and more efficiently, plasma volume expands, and cardiovascular strain during heat exposure is reduced. These adaptations help personnel tolerate high temperatures better and lower the risk of heat illness during deployment. Implementing an acclimatization plan, with progressively longer work periods and adequate rest in hot environments, is key.

Vaccination against cholera protects against a diarrheal disease, not heat stress. Isolation of affected individuals is about infection control, not preventing heat-related problems. Immediate deployment of antibiotics treats bacterial infections, not heat stress.