Zoonoses

Pregunta	Respuesta
Zoonoses	Where an animal infecting virus becomes capable of infecting humans
Usual Animal Sources of Viruses	Birds (poultry), or pigs
Antigenic Shift	Where two or more different viral strains (or different viruses completely) combine
Antigenic Shift- New Virus	New viral subtype with genetic material and surface antigens which are a mix of the two parents
Antigenic Shift- New Viral Infectiousness	Varies greatly- can increase, decrease, or no change
Antigenic Drift	Alteration of the genome during replication
Antigenic Drift- Cause	Immunity leads to selection pressure
Antigenic Drift- RNA Polymerases	Have no proof reading and are very error prone, so RNA viruses undergo antigenic drift very often
Antigenic Drift- New Strains	Causes new strains of the same virus to develope (i.e. In Influenza each year)

Resumen del Recurso

	Creado por gina_evans0312 hace alrededor de 10 años