Q 01/05

Ebola is named after a river in which present-day country?

A) United Republic of Tanzania

B) Central African Republic

C) Republic of the Congo

D) Democratic Republic of the Congo

Answer · why

D) Democratic Republic of the Congo

The 1976 Yambuku outbreak happened near the Ebola River in what was then Zaire.

Q 02/05

Which animals are believed to be the natural host of ebolaviruses?

A) Fruit bats

B) Rodents

C) Monkeys

D) Mosquitoes

Answer · why

A) Fruit bats

They can carry and spread the virus without getting sick; three species of fruit bat were found to be likely carriers.

Q 03/05

How many known ebolaviruses are there, and how many of them are dangerous to humans?

A) Six and four

B) Eight and six

C) Three and two

D) Four and four

Answer · why

A) Six and four

Reston and Bombali viruses are the two not thought to make people ill.

Q 04/05

Ebola outbreaks have had death rates between 25% and 90%; roughly what is the average?

A) 10%

B) 25%

C) 50%

D) 35%

Answer · why

C) 50%

Which virus is involved and how quickly treatment starts make a big difference to the odds.

Q 05/05

What is Ebola's maximum incubation period, the standard monitoring window for contacts?

A) 21 days

B) 14 days

C) 7 days

D) 30 days

Answer · why

A) 21 days

Symptoms usually appear within 4 to 10 days; models suggest around 5% of cases may take longer than three weeks.