BASIC EPID

The "epidemiologic triad" includes all the following except

• agent

• host

• environment

• behavioral factors

Which of the following is a chemical cause of disease?

• bacteria

• host

• nutritive excesses

• trauma

Increases in the ability of a biologic agent to enter a host is called

• infectivity

• pathogenicity

• virulence

• toxicity

In epidemiological triad environment factors can be classified as

• physical

• chemical

• social

• biological

Agents such as vitamins, protein, fat etc. are an examples of ;

• physical agents

• nutritive agents

• chemical agents

• all of the above

Which of the following are key comonents of Epidemiological triangle?

• Host, Agent and Physical Environment

• Host, Genes and Physical Environment

• Host, Agent and Environment

• Host, Vector and Environment

Define a Host

• With the presence of, excessive presence, or lack of is essential for the occurance of a disease

• This is the domain in which disease causing agents may exist, survive, or come from

• Is the person or animal that provides substinance for an infectious agent under natural conditions

Define infectivity

• This is the ability of an agent to enter and multiply in a susceptible host

• This is the degree to which an agent produces toxic substances

• The severity of the disease

The following are the mechanisms vital to the maintenance of health except

• The maintenance of the internal environment, or homeostasis

• Adaptation to stress situation

• Defence against microbiological agents, such as bacteria and viruses

• The maintenance of the external environment

A male kid is having cold fever, thus his body temperature is low. What is the detector of the low temperature?

• Brain

• Blood vessel

• Thermostat

• Heart