Intro to Infectious Disease

An infectious disease is a disease that is caused by the invasion of a host by agents whose activities harm the host's tissue and can be transmitted to other individuals

• True

• False

What is the name of a thing that can cause disease?

• microorganism

• pathogen

• microbe

• all of the above

Normal flora or the microbiome are microorganisms that live in and on our bodies. What is their role?

• They are dangerous because they are pathogens that cause disease

• They are helpful because they compete with and stop the growth of harmful microbes

• They are neutral because they do not do anything

• All of the above

How is an opportunistic pathogen different than a true pathogen?

• Opportunistic infections can infect everyone; true pathogens infect people with failing immune systems

• True infections can infect everyone; opportunistic pathogens infect people with failing immune systems

• They are not different, are the same

• All of the above

Which of following groups have immune system problems that can lead to opportunistic infections?

• Cancer patients receiving chemotherapy

• HIV-positive individuals

• People who have AIDS

• All of the above

Pneumocystis carinii is a rare opportunistic infection that was observed in immunosuppressed men with HIV/AIDS

• True

• False

Which of the following is a characteristic of infectious diseases? Choose all that apply

• Contagiousness--how easily it is transmitted

• Virulence--how easily it causes disease

• Lysoliness--how easily it can be cleaned up

• Insistence--how easily it can win an argument

Which of the following is an infectious disease?

• Clostridium tetani

• Cystic fibrosis

• Atherosclerosis

• All of the above