Overall, most cases of pneumonia are caused by:
a. viruses.
b. gram-negative bacteria.
c. protozoa.
d. fungi.
A
About half of all pneumonia cases are caused by viruses.
Health Professions
a. viruses.
b. gram-negative bacteria.
c. protozoa.
d. fungi.
A
About half of all pneumonia cases are caused by viruses.