Human Human Bacterial Bacterial DiseasesDiseases

Who do they affect?Who do they affect?

Bacteria cause half of Bacteria cause half of all human diseasesall human diseases

Bacteria are carried in Bacteria are carried in air, food, water, and air, food, water, and can invade woundscan invade wounds

How are they identified?How are they identified?

Bacteria are classified by shapes – Bacteria are classified by shapes – spheres, rods, and spirals.spheres, rods, and spirals.

Bacteria cell walls are made up of Bacteria cell walls are made up of different arrangements of sugars and different arrangements of sugars and amino acids and react differently to amino acids and react differently to gram stainsgram stains

Gram + stain purple and Gram – Gram + stain purple and Gram – stain pinkstain pink

Streptococcus mutans Streptococcus mutans

Causes tooth decayCauses tooth decay Bacteria lives in mouthBacteria lives in mouth Destroys enamelDestroys enamel Causes toothache/lossCauses toothache/loss Area removed and filledArea removed and filled

Group A beta-hemolytic Group A beta-hemolytic StreptococcusStreptococcus

Causes strep throatCauses strep throat Symptoms: fever, sore throat, Symptoms: fever, sore throat,

swollen neck glandsswollen neck glands Inhaled or ingestedInhaled or ingested Treated with antibioticsTreated with antibiotics

Mycobacterium Mycobacterium tuberculosistuberculosis

Causes tuberculosisCauses tuberculosis Symptoms: fatigue, fever, night Symptoms: fatigue, fever, night

sweats, cough, weight loss, chest sweats, cough, weight loss, chest painspains

InhaledInhaled Treated with antibioticsTreated with antibiotics

Clostridium tetaniClostridium tetani

Causes tetanusCauses tetanus Symptoms: stiff jaw, muscle spasms, Symptoms: stiff jaw, muscle spasms,

paralysisparalysis Thru punctures and woundsThru punctures and wounds Clean wounds/antibiotics/vaccineClean wounds/antibiotics/vaccine

Borrelia burdorferiBorrelia burdorferi

Causes Lyme diseaseCauses Lyme disease Symptoms: site rash, chills, body Symptoms: site rash, chills, body

aches, joint swellingaches, joint swelling Thru tick bitesThru tick bites Treated with antibioticsTreated with antibiotics

Streptococcus Streptococcus pneumoniaepneumoniae

Causes pneumoniaCauses pneumonia Symptoms: cough, fever, weight loss, Symptoms: cough, fever, weight loss,

chest painchest pain InhaledInhaled Treated with antibioticsTreated with antibiotics

Neissereia gonorrhoeaeNeissereia gonorrhoeae

Causes gonorrheaCauses gonorrhea Symptoms: open sores and painful Symptoms: open sores and painful

urinationurination Thru sexual contactThru sexual contact Treated with antibioticsTreated with antibiotics

Treponema pallidumTreponema pallidum

Causes syphilisCauses syphilis Symptoms: open sores, painful Symptoms: open sores, painful

urination, rash, aches/pains, damage urination, rash, aches/pains, damage to brain and spinal cordto brain and spinal cord

Thru sexual contactThru sexual contact Treated with antibioticsTreated with antibiotics

Bacillus anthracisBacillus anthracis

Causes anthraxCauses anthrax Symptoms: rash, difficulty breathing Symptoms: rash, difficulty breathing

and seeingand seeing Thru inhalation, ingestion, Thru inhalation, ingestion,

cuts/woundscuts/wounds Treated with antibioticsTreated with antibiotics

Vibrio choleraeVibrio cholerae

Causes choleraCauses cholera Symptoms: diarrhea, vomiting, Symptoms: diarrhea, vomiting,

dehydrationdehydration Thru drinking contaminated waterThru drinking contaminated water Treated with antibioticsTreated with antibiotics