DISEASE

PERIOD OF INCUBATION

SYMPTOMS

TIME OF ISOLATION

Mumps

Days 14-21 average 18

Swelling of the glands between ear and jaw, on either side or both.

From day when swelling first appears till 10 days after, usually 3 weeks.

Chicken-pox

Days 12-16 average 14

Slight fever, after 24 hours small pimples appear on back and face.

From onset until last crust has fallen, usually 14 days.

German Measles

Days 6-18 average 14

Very slight fever, rash (if any) appears first on face, may only last a few hours. There may be headache and nausea.

From 2 days before rash till symptoms are gone. Sometimes 2 weeks.

Measles

Days 9-16 average 12

Sneezing, running from eyes and nose, face swollen, sore throat, cough, fever gradually rising, rash appears first on face and neck.

From first catarrhal symptoms until desquamation ceases, usually .24 days.

Smallpox

Days 9-16 average 16

Chill, rapidly rising temperature, intense headache, pain in back and legs, rash, small, red, hard pimples, appearing first on face and wrists.

From onset until last crust has fallen, usually 6 weeks.

Scarlet-fever

Days 1-7 average 7

Sudden vomiting, sometimes chill or convulsions, high temperature, sore throat, tongue coated on edges, bright red in center, general malaise, typical rash appearing first on chest and shoulders.

From appearance of rash till desquamation has entirely ceased; usually 6 weeks.

Diphtheria

Days 1-6 average 6

Especially in the beginning of the disease the temperature is not as high as in tonsillitis; headache, nausea, sore throat, with white patches on the tonsils.

From onset till germs have en-t i r e 1 y disappeared.