Question 19M.2.SL.TZ1.c
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.SL.TZ1.c |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Suggest | Question number | c | Adapted from | N/A |
Ebola virus disease (EVD) is the disease in humans and other primates that is caused by the Ebola virus. Fruit bats are the reservoir for the virus and are able to spread the disease without being affected. Humans can become infected by contact with fruit bats or with people infected by the virus, their body fluids or equipment used to treat them.
The table shows data for four African countries that were affected by the 2014–2015 Ebola outbreak.
[Source: adapted with permission, from Ebola Situation Report, figure 1, http://apps.who.int/ebola/current-situation/ebolasituation-
report-2-march-2016, March 2016, and from Successful treatment of advanced Ebola virus infection with T-705
(favipiravir) in a small animal model, Oestereich, L. et al, 2014, under CC BY 3.0]
Based on the mode of transmission of the Ebola virus, suggest a possible reason for the relationship between population density and the number of Ebola cases in these four countries.
[1]
greater density means more frequent contact with infected people/animals ✔
Need both greater density and frequency of contact
Most candidates correctly used high density and frequency of contact to describe the relationship. Very few responses discussed high density but did not relate it to the frequency of contact. Others focused on modes of transmission alone and did not relate it to density.
