In the 19th century, a major development came from the realization that microorganisms cause disease, leading to which public health practice?

In the 19th century, a major development came from the realization that microorganisms cause disease, leading to which public health practice?

• A. Germ theory
• B. Infection control
• C. Antibiotics
• D. Sterilization

Answer: (B)

The idea being tested is how recognizing that microorganisms cause disease leads to practical steps to prevent their spread. Once scientists linked tiny agents to illness, public health focused on preventing transmission through infection control. That means adopting broad measures like hand hygiene, sterilization and aseptic techniques in medical settings, and improving sanitation, clean water, and waste management to reduce infections in the community and clinics. While germ theory is the underlying concept, and antibiotics later transformed treatment, and sterilization is one targeted method, the overarching public health practice that grows from this understanding is infection control.

The idea being tested is how recognizing that microorganisms cause disease leads to practical steps to prevent their spread. Once scientists linked tiny agents to illness, public health focused on preventing transmission through infection control. That means adopting broad measures like hand hygiene, sterilization and aseptic techniques in medical settings, and improving sanitation, clean water, and waste management to reduce infections in the community and clinics. While germ theory is the underlying concept, and antibiotics later transformed treatment, and sterilization is one targeted method, the overarching public health practice that grows from this understanding is infection control.