Dr John Campbell
Dr John Campbell
@campbellteaching·3.3M subscribers·3.1K videos

Infection, notes below.

Posted

February 29, 2020

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Modes of transmission

Vectors

Organism which transmits infection from one host to another

Fomites

Article which transmits infection between hosts

Cross-infection

Infection is transferred from one person to another

Exogenous infection

Organisms arrive from without (or outside) the person

Endogenous infection

From within or on the individual

Vertical and horizontal transmission

Vertical transmission, from mother to child

Toxoplasmosis

Rubella

Herpes simplex virus – 2

Zika

HIV

Syphilis

Hepatitis B

Horizontal transmission

One member of a species from another member of the same species

Infection may be directly from one person or indirectly via the environment

Spillover infection (pathogen spillover, spillover event)

Pathogen moves from a reservoir population into a novel host population

Spillover zoonoses

Most viral infections are zoonotic

Zoonoses. (Animals to humans)

Rabies - dogs

Yellow fever - monkeys

Leptospirosis – rats

Spongiform encephalopathy - cows

Influenza – poultry

Health-care acquired infections (HAIs)

Community acquired infections

Nosocomial, contracted in hospital or from health care interventions

Close proximity of compromised patients

Staff going from patient to patient

Use of antibiotics

Bacterial

Clostridium difficile

Methicillin-resistant Staphylococcus aureus

Pneumonia

Viral

Viral hepatitis

HIV

Influenza

Tuberculosis.

Phlebitis

Urinary tract infections

Pneumonia

Norovirus, (winter vomiting bug)

Surgical site infections (SSIs), endogenous or exogenous

The prime directive, ‘first do no harm’.

Community acquired

Community acquired pneumonia (CAP)

Rhinovirus

Influenza

Upper Respiratory Tract Infections

Lower Respiratory Tract infections

Measles

Infective parotitis

Rubella

Chicken pox

Sexually transmitted infections

Pneumonic plague

Bubonic plague

Smallpox

Guests & Subjects Covered

Vectors OrganismFomites ArticleCross-infection InfectionToxoplasmosis Rubella HerpesZoonoses AnimalsHAIs CommunityBacterial ClostridiumMethicillin-resistant Staphylococcus

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Infection, notes below. · Dr John Campbell · Sentinel