Infection is the detrimental colonization of a host organism by a foreign parasite species.
pathogenesis(why infection occurs)Persistent infection occur because the body is unable to clear the organism after the initial infection. Persistent infection are characterized by the continual presence of the infectious organism resulting in recurrent relapses.There are some viruses that can maintain a persistent infecting different cells of the body. A typical example is the herpes virus which tends to hide in nerves and become reactivated when specific circumstances arise.
source, means of transmission, susceptible host
The chain of infection for biological agents begins with the etiological agent and includes the reservoir, the portal of exit, and the mode of transmission. The portal of entry and the susceptible host end the chain.
Humans
Infection of the host cell then leading to recombination to the host cell's DNA.
Lysogenetic infection
A Lysogenic Infection
Viruses have to come from a source (Chain of Infection: Source, Portal of Exit, Mode of Transmission, Portal of Entry, Susceptible Host) but the thing about Viruses is that once you have them they're there for good. Often they remain latent and only raise their head if the host is run down, stressed, mal-nourished...
lytic infection
hidden camera
1. Reservoir or Source of Infection 2. Causative Agent 3. Modes of Escape 4. Susceptible Host 5. Modes of Transmission 6. Portals of Entry By: Chi-Chi Gines
a rat bites into its host and the infection starts to spread
lytic infection