Which of the following is true? a. Ebola and Lassa are both caused by bacteria. b. Ebola and Lassa are both caused by viruses. c. Ebola is caused by a bacterium, Lassa is caused by a virus. d. Ebola is caused by a virus e. Lassa is caused by a bacterium.

b. Ebola and Lassa are both caused by viruses.

Explanation:

Ebola fever is caused by the Ebola virus which is an enveloped virus and is a member of Filoviridae. Ebola virus infection is 80% fatal. The incubation period for pathogen ranges from 2 to 21 days. Symptoms of the infection are fever, muscle and joint ache, stomach pain, bleeding, etc. Lassa hemorrhagic fever is caused by the Lassa virus. Infection with the Lassa virus causes fever, malfunctioning of the gastrointestinal system and bleeding.

The correct answer is b. Ebola and Lassa are both caused by viruses.

Explanation:

Lassa fever is caused by a virus known as Lassa virus which comes under the Arenavirus family. Lassa virus is mainly spread through rodents especially rats of genus mastomys because they carry this virus and contaminate the food by urination and feces. In west African countries Lassa fever is an endemic disease.

Ebola is a deadly disease caused by Ebola virus. It is also referred to as hemorrhagic fever virus because it leads to internal bleeding, therefore, it causes severe tissue damage and inflammation. It is spread when any healthy person comes in contact with the body fluid of an infected person. Therefore the correct answer is b.