Clostridium tetani

29,079 views 20 slides May 23, 2013
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Clostridium tetani Prepared by Joevani S. Peñol

gram-positive, obligate anaerobic, spore-forming rod shape bacterium drumstick appearance. MORPHOLOGY

Heat resistant spores and usual antiseptics. survive autoclaving at 121°C for 10-15 minutes . resistant to phenol and other chemical agents . RESISTANCE

soil intestine feces of livestocks Manure-treated soil skin surfaces contaminated heroin RESISTANCE

O rganism is sensitive to heat. Sensitive to oxygen. SENSITIVITY

Tetanus acute , often fatal, disease caused by an exotoxin produced by Clostridium tetani . rigidity and convulsive spasms of skeletal muscles. involves the jaw (lockjaw) and neck and then becomes generalized. EPIDEMIOLOGY

Enters through the wound. Spores germinate in the presence of anaerobic condition. Tetanospasmin spread in through blood and lymphatic. Interferes with release of neurotransmitters, blocking inhibitor impulses. PATHOGENESIS

3 to 21 days Neonatal tetanus , symptoms usually appear from 4 to 14 days after birth INCUBATION PERIOD

Man Suffering from Tetanus

LOCAL (Uncommon) CEPHALIC (Rare) GENERALIZED (Common) CLASSES

persistent contraction of muscles in the same anatomic area as the injury . Precede the onset of generalized tetanus, but is generally milder. 1 % of cases are fatal. LOCAL

Occurs with otitis media (ear infections) Head injuries. Involvement of the cranial nerves, especially in the facial area . CEPHALIC

Trismus stiffness of the neck and difficulty in swallowing rigidity of abdominal muscles. rise of 2°-4°C above normal temp. sweating and elevated blood pressure episodic rapid heart rate Spasms GENERALIZED

Occurs in infant infection of the unhealed umbilical estimated >270,000 deaths worldwide per year. Neonatal tetanus

Tetanospasmin VIROLENCE FACTOR

VIROLENCE FACTOR Mechanism of Action

Mouse inoculation Diagnosis

Medical Management Tetanus immune globulin (TIG ) Intravenous immune globulin (IVIG) Wound Management proper immunization Prevention & Control

Temporary Immunity Immunity

Impact to Education & Community
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