ANATOMY

Detailed explanation-1: -The variola virus causes smallpox. In the past, people spread smallpox most commonly through direct, prolonged face-to-face contact with others. When they sneezed or coughed, they would send respiratory particles through the air. When other people inhaled these large droplets, they would become infected.

Detailed explanation-2: -How does Smallpox Spread? Before smallpox was eradicated, it was mainly spread by direct and fairly prolonged face-to-face contact between people. Smallpox patients became contagious once the first sores appeared in their mouth and throat (early rash stage).

Detailed explanation-3: -Smallpox is spread through prolonged face-to-face contact via droplets expelled from the patient’s nose and mouth, usually by coughing. Smallpox may also be transmitted through contact with materials from smallpox pustules or scabs.

Detailed explanation-4: -Before smallpox was eradicated, it was a serious infectious disease caused by the variola virus. It was contagious-meaning, it spread from one person to another. People who had smallpox had a fever and a distinctive, progressive skin rash.

Detailed explanation-5: -Human-to-human transmission of variola virus occurs by inhalation of large, virus-containing airborne droplets of saliva from an infected person. Infectious virus particles are released from the sloughing off of oropharyngeal lesions.