Which one is a protozoan disease

Options

A. AIDS
B. Taeniasis
C. Polio
D. Malaria.

Answer

To determine which option is a protozoan disease, we will analyze each of the given choices:

1. **AIDS**:
- AIDS (Acquired Immunodeficiency Syndrome) is caused by the Human Immunodeficiency Virus (HIV). Since HIV is a virus, AIDS is not a protozoan disease.

2. **Teniasis**:
- Teniasis is caused by tapeworms, which are helminths (worms), not protozoans. Therefore, teniasis is also not a protozoan disease.

3. **Polio**:
- Polio, or poliomyelitis, is caused by the poliovirus. Since this is a viral disease, polio is not a protozoan disease.

4. **Malaria**:
- Malaria is caused by the Plasmodium parasite, which is a protozoan. There are several species of Plasmodium, such as Plasmodium falciparum and Plasmodium vivax, that cause malaria. Therefore, malaria is indeed a protozoan disease.

Based on the analysis, the correct answer to the question "Which one is a protozoan disease?" is **Malaria**.