Definitions...

Which of the following implies infection?

• Entry of pathogen

• Colonization of mucosal surface by pathogen

• Invasion of cell/tissue by pathogen

• All of these

What is an infectious disease?

• A contagious disease

• A disease caused by an infection

• A state of pathogen presence in the body without obvious symptoms

• A disease caused only by bacterial produced toxins

What is a communicable disease?

• A disease that results from human communication

• A disease that is caused by environmental toxins

• A disease that can spread from an infected person to another host

• A disease that is always present in a community

What is a contagious disease?

• Any disease that spreads through contaminated food

• A disease that only affects animals

• A disease that spreads easily from person to person

• A condition that only spreads through insect bites

What is a zoonosis?

• A disease that originates in animals and can spread to humans

• A disease only occurring among animals

• A disease that strictly occurs in humans

• A disease that is spread only through direct contact with animals

What is an endemic disease?

• A disease that is always present in a particular population

• A disease that suddenly appears and disappears unpredictably

• A worldwide outbreak of disease

• A condition that affects only travellers

What is a sporadic disease?

• A disease that is spread through spores

• A disease that spreads quickly across continents

• A seasonal disease with predictable patterns

• A disease that occurs irregularly and infrequently

What is an epidemic?

• A communicable disease

• A disease that has spread worldwide

• A disease that never spreads beyond its original host

• A disease which occurrence exceeding the expected levels in a population

What is a pandemic?

• A disease affecting panda populations

• A condition that is limited to a single community

• A worldwide epidemic affecting multiple continents

• A disease affecting multiple countries

What is a reservoir?

• Living and non-living source where a pathogen normally resides

• Non-living source of pathogen

• A temporary host for a virus that does not spread disease

• The only place where pathogens can survive