INCUBATION  PERIODS OF COMMUNICABLE  DISEASES

Usually about 0-7 days

Disease

Incubation period

Isolation

Immunization

Avg

Range

Anthrax

1–4

(1-7)

Clean technique

Bacillary dysentery

2–4

(1-7)

Till stool negative

Chancroid

3–5

(1-12)

From sexual contact

Cholera

3

(1-5 )

Till stool negative(quarantine)

Dengue

5–6

(3-15)

Screen

Diphtheria

2–5

Till nose&throat negative

Toxoid/Antitoxin

Epidemic diarrhea of newborn

6–7

(2-21)

Yes. (quarantine0

Food poisoning

Staphylococcus

2–4

(1-6)hrs

from food handling

Antitoxin

Salmonella

12

(6-48)hrs

Botulinus

18–24

(2-48)hrs

Gonorrhea

3–5

(1-14)

From sexual contact and children

Infectious keratoconjunctivitis

5–7

Influenza

1–3

Acute stage

Meningococcal meningitis

<7

(2-10)

24 hrs if treated

Paratyphoid

1–10

Till urine & stool negative

Vaccine

Plague

3–6

Till well

Pneumonia

1–3

Respiratory precautions

Puerperal infection

1–3

Till well

Relapsing fever (Tick)

3–6

(2-12)

Scabies

1–2

From school

Scarlet fever

2–5

Tularaemia

3

(1-10)

Respiratory precautions

Yellow fever

3–6

Modified vaccine

Coccidiodomycosis

10–15

(7-21)

Till putum negatives

Equine encephalitis

5–15

Infectious mononucleosis

11

(7-15)

Respiratory precautions

Leptospirosis

9–10

(4-19)

Lymphocytic Choriomeningitis

8–13

MEASLES

9–14

Till 5 days after the rash

Immunoglobulins

Pertussis

5–9

(2-21)

From school& susceptibles

Vaccine

Poliomyelitis

7–14

(3-35)

First 2 weeks

Vaccine

Primary atypical pneumonia

11

(7-21)

Respiratory precautions

Psittacosis

6–15

Till afebrile

Relapsing fever (Louse)

7

(5-12)

To delouse

Scrub typhus

7–10

(7-14)

Trichinosis

9

(2-28)

Typhoid fever

7–14

(3-38)

Till stool & urine negative

Vaccine

Typhus fever

12

(6-15)

Quarantine

Vaccine

Amoebic dysentery

21-28

(8-90)

From food handling

Brucellosis

14

(6-30+)

Chickenpox

14

(12-21)

Till skin clear

German measles

16-18

(10-21)

First week

Granuloma inguinale

10-to-90

From sexual contact

Hepatitis, infectious

25

(15-35)

School disinfection for 3 weeks

Hepatitis, Serum

80-100

(6-180)

Vaccine

Lymphogranuloma venereum

7–28

(to35+)

From sexual contact

Malaria

10-to-17

(to35+)

Screen

Mumps

18

(12-26)

Till glands down

Q fever

14-21

Vaccine

Rabies

14-42

(10-180)

Aseptic technique

Rickettsialpox

10-to-24

Syphilis

21

(10-90)

From sexual contact & children

Tetanus

4–21

Toxoid

Tuberculosis

Variable

Open cases

B.C.G Vaccine

Yaws

30=90

Desirable till treated