Which of the statements about transmission of pathogens is True?
A) Vertical transmission of a pathogen is from the environment to a person.
B) Horizontal transmission refers to spread of a pathogen from mother to fetus.
C) Sexual intercourse is an example of indirect contact.
D) Droplet transmission is a particularly important source of contamination in densely populated buildings such as schools.
E) Droplet nuclei are large drops of pathogen-containing fluid discharged by talking; they fall to the ground within a meter of the person.

Question

Which of the statements about transmission of pathogens is True?
A) Vertical transmission of a pathogen is from the environment to a person.
B) Horizontal transmission refers to spread of a pathogen from mother to fetus.
C) Sexual intercourse is an example of indirect contact.
D) Droplet transmission is a particularly important source of contamination in densely populated buildings such as schools.
E) Droplet nuclei are large drops of pathogen-containing fluid discharged by talking; they fall to the ground within a meter of the person.

Quizplus · Accepted Answer

Droplet transmission is a particularly important source of contamination in densely populated buildings such as schools, where people are in close proximity to each other and the droplets can spread easily through coughing, sneezing, or talking.

Option A is incorrect as vertical transmission refers to transmission of a pathogen from a mother to her child (during pregnancy, birth, or breastfeeding).
Option B is incorrect as it refers to the spread of a pathogen from a mother to her offspring, and not specifically from mother to fetus.
Option C is incorrect as sexual intercourse is a form of direct contact.
Option E is incorrect as droplet nuclei are small droplets of pathogen-containing fluid that can remain suspended in the air and travel further than a meter.

Which of the Statements About Transmission of Pathogens Is True