Microbiology - 4 [Pathogenesis of Microbial Disease]

Question 1

How is called a microorganism that can cause disease?

Answer 1

Pathogen
Minority of microorganisms are pathogenic

Question 2

What are opportunistic organisms?

Answer 2

Causes disease on immuno compromised individuals

Question 3

What’s virulence?

Answer 3

Quantitative measure of pathogenicity

Question 4

How is virulence measure?

Answer 4

By #organisms requiere to cause disease
LD50 / ID50

Question 5

What’re communicable diseases?

Answer 5

Spreads host to host
I.e TB

Question 6

What’s LD50

Answer 6

microorganism needed to kill 1/2 hosts

Question 7

What’s ID50?

Answer 7

needed to cause infection in 1/2 hosts

Question 8

Stages of acute infection. Briefly explain each

Answer 8

Incubation
Prodromal
Acute specific illness
Recovery

Question 9

Meaning of contagious disease

Answer 9

Highly communicable
I.e chickenpox

Question 10

Difference between incidence and prevalence

Question 11

What’s an endemic infection

Question 12

What’s an epidemic

Question 13

What’s a pandemic

Question 14

Ways of transmission

Answer 14

Inhalation
Ingestion
Inoculation

Question 15

Steps a bacteria causes disease

Answer 15

Transmission
Adherence
Invasiveness
Toxigenicity

Question 16

Difference between exogenous and endogenous

Question 17

Portals of entry of pathogens

Answer 17

Skin
Respiratory tract
Gastrointestinal tract
Genitourinary tract

Question 18

Difference between latent and chronic carriers with examples

Question 19

Difference between latent and chronic carriers with examples