Micro Quiz

Staphylococcus sp.

Streptococcus sp.

Pseudomonas sp.

Staphylococcus aureus - most common

Folliculitis - infections of hair follicle (progresses to a boil, then to an abscess)

Sty - infected eyelash follicle

Impetigo - highly contagious

Toxic shock syndrome (TSS) - released into bloodstream

• Streptococcus pyogenes - most common
• -aka group A streptococci (GAS)
• -possess hemolysins
• -cause of strep throat

• Necrotizing fascitis
• -aka flesh-eating bacteria
• -rapid destruction--requires amputation

• Pseudomonas aeruginosa - most common
• -can live almost anywhere & hard to kill

Swimmer's ear

Catheter infections

Burn wounds

Variola

Varicella & herpes zoster

Herpes simplex virus (HSV-1 & HSV-2)

Rubeola

• -aka: smallpox
• -1st disease for which we used vaccines
• -considered to be eradicated
• -vaccination stopped in 1970s
• -bioterrorism a concern btw US & Russia

• Varicella = chickenpox
• -a herpes virus

• Herpes zoster = shingles
• -remains latent in body then gets reactivated

HSV-1 = cold sores = fever blister

HSV-2 = genital herpes

• Herpes encephalitits
• -HSV-1 or 2 can spread to the brain

• Rubola = measles
• -kills 600 children/day
• -highly contagious
• -vaccination with the MMR vaccine

• Cutaneous Mycosis
• -causes tineas (ringworm)
• Types of germatophyte:
• *Trichophyton
• *Microsporum
• *Epidermophyton

• Candida albicans
• -most common
• -causes Candidiasis (yeast infection)
• -occurs in GU tract & in mouth

Haemophilus influenzae

Neisseria gonorrhoeae

Chlamydia trachomatis

• -causes pinkeye
• -made worse by extended contact lens wear

• -causes ophthalmia neonatorum
• -causes blindness
• -newborn babies are given eyedrops

• -causes trachoma in eyes (not the same as an STD)
• -affects ~500 million ppl worldwide
• -7 million blinded victims
• -leads to turning in of the eyelashes

• Herpes Simplex Virus (HSV-1)
• -can cause herpetic keratitis
• -can cause blindness