2.1 Viruses and Basic Terminology

2.1.1 Viruses

2.1.1.1 Negative-sense RNA viruses

Figure 2.3: Information on Examinable Negative-Sense RNA Viruses

The ones examined in BS0005 are the Paramyxoviridae and the Filoviridae.

2.1.1.2 Positive-sense RNA viruses

Figure 2.4: Information on Positive-Sense RNA Viruses

The ones examined are the viruses from the following genuses: Togaviridae, Flaviviridae, and Coronaviridae.

2.1.2 Basic terminologies

A host is an animal or a plant that a parasite lives on. Hosts can also be primary (i.e., amplify the host) or secondary (i.e., a dead-end host).

A vector is an animal (usually an insect or a tick) that transmits parasitic microorganisms and the diseases that they cause from host to host.

A reservoir is an (in)animate source that harbors disease-causing organisms and hence, also serves as a potential source of epidemics.