Bacterial Diseases.

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Presentation transcript:

Bacterial Diseases

Rickettsias Coccus or bacillus Intracellular parasite Normal host: arthropod (gastrointestinal tract) Transmitted via mouthparts or feces Named after discoverer – Dr. Harold Ricketts

Rocky Mountain Spotted Fever Rickettsia rickettsii

Rickettsia rickettii

Typhus Fever Rickettsia prowazekii Normal host: human body lice and human head lice

Rickettsia prowazekii

Typhus fever symptom

Lyme disease Normal host: ticks on small mammals

Borrelia burgdorferi

Lyme disease symptom

Tetanus Causes nerve cells to send continuous messages to the muscles to contract Symptoms: Stiffness of jaw (lockjaw) Stiffness of abdominal muscles Headaches Difficulty swallowing Can be fatal is untreated

Clostridium tetani

“If it has been 10, then do it again.” - Bob Villa Tetanus vaccine “If it has been 10, then do it again.” - Bob Villa

Clostridium botulinum

botulism 3 ways of contracting disease Foodborne (25%) Wound (3%) Infant (72%) Symptoms usually appear 18 – 36 hours after infection

Typhoid fever Bacteria lives in human bloodstream and intestinal tract Bacteria shed in stools and contaminates food or water Causative agent: Salmonella typhi

Salmonella typhii

Typhoid fever Mary Mallon (Typhoid Mary) Early 1900s in New York

Pneumonia

Streptococcus pneumoniae