Virulence

Severity of disease

• incidence

• virulence

• pathogenicity

• taxogenicity

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Invasion factor is ...

• component of appendage on the surface bacteria that helps their adhesion to other cells

• a protein that allows a pathogen to colonize the host's body

• a protein that allows pathogens to enter cells

• a protein produced by pathogens that poisons hosts cells

A toxin is ...

• component of appendage on the surface bacteria that helps their adhesion to other cells

• a protein that allows a pathogen to colonize the host's body

• a protein that allows pathogens to enter cells

• a protein produced by pathogens that poisons hosts cells

A protein produced and released by a pathogen is a...

• Endotoxin

• Exotoxin

True or false: surface coats that inhibit phagocytosis are a virulence factor of legionellosis

True or false: pili that ensure attachment and prevent dislocation by mucociliary clearance are a virulence factor of legionellosis.

True or false: spike proteins that facilitate host cell invasion and escape from detection are a virulence factor of legionellosis.

The immune system mounts a cell-mediated reaction in which macrophages attach to the outer walls of the bacteria for active phagocytosis. The engulfed bacteria proliferate within the macrophages. This is a virulence factor of legionellosis.

________________________ is the the measure of the severity of the disease caused by a pathogen.

The intensity of the disease in a host is known as:

• pathogenicity

• susceptibility

• infectivity

• virulence