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Am I Germy?

Below is a list of common diseases along with the transmision, incubation and contagious periods for each:


Bronchiolitis

Transmission:
Spread via respiratory droplets through sneezing or coughing

Incubation Period:
2 to 10 days

Contagious Period:
Onset of cough until 7 to 10 days

Chickenpox (Varicella)

Transmission:
Airborne or via skin contact with lesions

Incubation Period:
10 to 21 days

Contagious Period:
2 days before rash appears until all sores have crusted
More information about Chickenpox (Varicella)

Colds

Transmission:
Spread via respiratory droplets or direct contact with infected person or object

Incubation Period:
2 to 4 days

Contagious Period:
Onset of runny nose until fever is gone


More information about Colds

Croup (viral)

Transmission:
Spread via respiratory droplets or contact with infected person or object

Incubation Period:
2 to 6 days

Contagious Period:
Onset of cough until fever is gone

More information about Croup (viral)

Diarrhea

Transmission:
Contact with feces

Incubation Period:
Depends on causative agent (bacterial 1 to 7 days; viral 1 to 4 days)

Contagious Period:
Depends on causative agent; usually until stools are formed. (See specific agents)

More information about Diarrhea

Fifth Disease (Parvo virus)

Transmission:
Spread via respiratory droplets

Incubation Period:
Usually 4 to 14 days, but can be as long as 21 days

Contagious Period:
7 days before rash until rash begins

Hand-foot-mouth (Coxsackie)

Transmission:
Spread via respiratory droplets, fecal/oral contact or fluid from blisters

Incubation Period:
3 to 6 days

Contagious Period:
Onset of mouth ulcers until fever is gone (respiratory tract shedding usually 1 week; fecal can be several weeks)

Hepatitis A

Transmission:
Fecal contact

Incubation Period:
15 to 50 days

Contagious Period:
1 to 2 weeks before jaundice begins until 1 week after onset of jaundice

Hepatitis B

Transmission:
Contact with infected blood/body fluids

Incubation Period:
45 to 160 days

Contagious Period:
Indefinite period. If Hepatitis e antigen is positive, at risk for transmission

Herpes Simplex

Transmission:
Oral/genital skin contact

Incubation Period:
2 days to 2 weeks

Contagious Period:
Initial infection: 1 week to several weeks (oral/genital). Recurrent infection: 3 to 4 days

Impetigo

Transmission:
Direct skin contact with lesion and contact with infected objects

Incubation Period:
7 to 10 days

Contagious Period:
Onset of sores until 1 day on antibiotics

Influenza

Transmission:
Spread via respiratory droplets or contact with infected person or object

Incubation Period:
1 to 4 days

Contagious Period:
24 hours before onset of symptoms until fever is gone, about 7 days

Lice

Transmission:
Spread via contact with skin or hair

Incubation Period:
10 to 14 days

Contagious Period:
Onset of itch until 24 hours after first treatment

More information about Lice

Meningococcus

Transmission:
Spread via respiratory droplets

Incubation Period:
1 to 10 days

Contagious Period:
7 days before symptoms to 24 hours after treatment begins

Mononucleosis

Transmission:
Contact with infected saliva

Incubation Period:
30 to 50 days

Contagious Period:
Undetermined, but usually 6 weeks

More information about Mononucleosis

MRSA

Transmission:
Spread via contact with infected person, person who is a carrier of the disease, or contaminated surface.

Incubation Period:
One to 10 days

Contagious Period:
Varies depending on whether infection is active and if person is seeking treatment
More information about MRSA

Pertussis (whooping cough)

Transmission:
Spread via respiratory droplets

Incubation Period:
Five to 21 days

Contagious Period:
Two weeks after onset of cough or until five days on antibiotics

Pink-eye or Conjunctivitis (bacterial)

Transmission:
Spread via contact with eye drainage


Incubation Period:
2 to 7 days

Contagious Period:
Onset of pus until symptoms have resolved

More information about Pink-eye or Conjunctivitis (bacterial)

Rotavirus

Transmission:
Direct or indirect contact with infected people

Incubation Period:
2 to 4 days

Contagious Period:
Before onset of diarrhea until 10 to 12 days after onset

Salmonella, Shigella, Campylobacter

Transmission:
Fecal contact

Incubation Period:
Salmonella - 12 to 36 hours
Shigella & Campylobacter - 1 to 7 days

Contagious Period:
Contagious until diarrhea is resolved; sometimes with prolonged excretions with salmonella

Scabies

Transmission:
Contact with clothing, bedding or skin of infected animal or person

Incubation Period:
4 to 6 weeks (previous exposure 1 to 4 days)

Contagious Period:
Onset of itch until one treatment completed

More information about Scabies

Scarlet fever

Transmission:
Spread via airborne respiratory droplets and direct contact

Incubation Period:
1 to 2 days

Contagious Period:
Onset of fever or rash until 1 day on antibiotics

More information about Scarlet fever

Sore throat (viral)

Transmission:
Spread via respiratory droplets

Incubation Period:
2 to 5 days

Contagious Period:
Onset of sore throat until fever is gone
More information about Sore throat (viral)

Strep throat

Transmission:
Spread via respiratory droplets

Incubation Period:
2 to 5 days

Contagious Period:
Onset of sore throat until 1 day on antibiotics
More information about Strep throat

2006 Red Book, Report of the Committee on Infectious Disease, American Academy of Pediatrics

Airborne - droplets nuclei that remain suspended in the air for long periods
Respiratory droplets - droplets propelled for a short distance, such as talking, sneezing, coughing, etc.

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