INCUBATION PERIOD OF DISEASES

virus, microscope, infection

Incubation period of diseases is a very,very HIGH YIELD TOPIC in Microbiology, Community medicine and Infectious diseases in medicine.
Year after year, questions on this topic are asked in NEET-PG, AIIMS and other PG exams.

Questions can be asked as direct one-liners or can be asked as a clinical vignette where the incubation period of diseases is a valuable clue.

Learn this table by heart. Either bookmark this table or get a print out, or better still, note this down in your REVISION NOTES.

Do let us know in the comments below if we missed any disease from this table.
Do let us know which table you would like to see next.

SR NO.DISEASESCAUSATIVE ORGANISMINCUBATION PERIOD(IP)
1Chicken poxHuman (alpha) Herpes virus 314-16 Days
2Measies (Rubeolla)RNA Paramyxovirus10-14 days
3Rubella (German measies)RNA Togavirus14-21 Days
4MumpsRNA Myxovirus14-21 Days
5InfluenzaOrthomyxovirus18-72 Days
6DiphtheriaCornynebacterium diphtheriae2-6 days
7Pertussis
(Whooping cough)
Bordetella pertussis7-14 days
8Meningococcal meningitisNeisseria meningitis3-4 days
9SARSCoronavirus3-5 days
10TuberculosisMycobacterium tuberculosisweeks-years
11PoliomyelitisPoliovirus7-14 days
12Hepatitis AEnterovirus 72 (Picoenavirus)15-45 days
13Hepatitis BHepadna virus45-180 days
14Hepatitis CHepacivirus30-120 days
15CholeraVibrio cholerae1-2 days
16Typhoid fever Salmonella typhi10-14 days
17staphylococcal food poisoningStaphylococcus aureus1-6 hours
18AscariasisAscaris Lumbricoides2 months
19Ancyclostomiasis (Hookworrm)A. duodenale5 weeks – 9 months
20MalariaPlasmodium vivax8-17 days
21Plasmodium Falciparum9-14 days
22Plasmodium malariae18-40 days
23Plasmodium ovale16-18 days
24Lymphatic FilariasisWuchereria bancroti8-16 months
25RabiesLyssavirus type 1(Rhabdovirus)3-8 weeks
26Yellow feverFlavivirus fibricus2-6 days
27 Japanese encephalitis Group B arbovirus (flavivirus) 5-15 days
28KFD Arbovirus (flavivirus) 3-8 days
29Chikungunya fever Chikungunyavirus (Arbovirus A) 4-7 days
30Leptospirosis Leptospira interrogans 4-20 days
31Bubonic plague Yersinia pestis 2-7 days
32Pneumonic plagueYersinia pestis1-3 days
33Septicemic plague Yersinia pestis 2-7 days
34Scrub typhaeRickettsia tsutsugsmushi10-12 days
35Q feverCoxiella burnetti2-3 weeks
36Teniasis (Tapeworms)T.solium , T. saginate5-14 weeks
37Leishmaniasis (Kala azar)L.donovani1-4 months
38TrachomaChiamydia trachomatis5-12 days
39TeranusClostridium tetani6-10 days
40YawsTreponemia pertenue3-5 weeks
41HIV/AIDSHIV/HTLV -III/LAVmonths -10 years
42Swine fluHN type A influenza1-4 days
43Crimean congo feverNairovirus (Buniyavirus)1-9 days
44H7N6 influenzaH2N3 Type A influenza1-10 days
45MERSBetacoronavirus12 days
46Ebola diseaseEbolavirus2-21 days
47AnthraxBacillus anthracis1-7 days
48BrucellosisBrucella melitensis5-60 days
49COVID-19Novel Coronavirus2-14 days

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