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incubation period [‚iŋ·kyə′bā·shən ‚pir·ē·əd]

(medicine)

The period of time required for the development of symptoms of a disease after infection, or of altered reactivity after exposure to an allergen.

(vertebrate zoology)

The brooding period required to bring an egg to hatching.

Incubation Period

(or incubation), the time interval from the moment of infection to the appearance of the clinical symptoms of a disease.

For each infectious disease, the incubation period has a characteristic length, although the length may vary depending on the number of microbes that entered the body, their pathogenicity, the physical condition of the body itself (previous traumas and illnesses, malnutrition, vitamin deficiency), and the site of entry of the infection. Vaccination, seroprophylaxis, and chemotherapy prolong the incubation period.

Table 1. Length of incubation periods of some infectious diseases
	Length of incubation period (in days)
	Most frequent “average”	Minimum	Maximum
Rabies . . . . . . .	40	12	3-6 months (rarely up to 1 year)
Botulism . . . . . .	12-24 hours	1-2 hours	1 (rarely more)
Brucellosis . . . . .	14	7	20-30
Typhoid fever . . .	14	3–4	21
Chicken pox . . . .	11–14	10	21
Influenza . . . . . .	2	a few hours	3
Dysentery . . . . .	3	2 hours	7
Diphtheria . . . . .	5	2	7–10
Whooping cough .	7–9	2	14–15
Measles . . . . . .	8–10	7	17 and 21 (with injection of serum)
Malaria . . . . . . .	10–15	6	31 (in tertian malaria, sometimes 7–11 months)
Epidemic parotitis (mumps) . . . . . .	11	9	21
Poliomyelitis . . . . .	7–14	3	35
Scarlet fever . . .	3–6	a few hours	7–12
Tetanus . . . . . . .	7–14	1	40 (sometimes upon removal of splinters, a few years)
Typhus . . . . . . .	12–14	6	20
Tularemia . . . . . . .	8	1	21
Epidemic cerebrospinal meningitis	2–3	a few hours	7
Foot-and-mouth disease . . . . .	4	2	6

In some infectious diseases (such as measles and diphtheria) causative agents are discharged into the environment during the incubation period; this leads to the infection of other persons. The length of the incubation period is important in discovering the source of infection and sometimes also for establishing a diagnosis.

IA. O. OL’SHANSKIT

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No references found	Results showed that the PrB60-treated mice exhibited a significant improvement in learning and memory (step-through latency time of 228+/-38 s compared to 101+/-32 s of the control group). Effect of a polyphenol-rich wild blueberry extract on cognitive ... by Life Extension A total of 300 men with premature ejaculation, diagnosed using the International Society of Sexual Medicine's definition (intravaginal ejaculatory latency time of a minute or less), participated in this study. New topical spray is 'safe, effective treatment for premature ... by Asian News International They now provide fast graphics, accurate synchronisation of up to 500 control channels, reduced latency time and complete management of safety procedures to eliminate any risk to the specimen under test. Real-Time Ethernet for Critical Applications by John East / Automotive community	latanier latch latch bolt latch needle latch plate Latch, William latch-in relay latch-up phenomenon latchet latchkey latchstring late binding late blight late gene Late Georgian style Late Glacial Period Late Gothic Revival Late Greek Late Latin Late Rococo Late Victorian architecture late-type star lateen latency Latency Period Latency time latent Latent Agrarian Overpopulation latent bud Latent Criminality latent defect latent failure latent heat latent heat of fusion latent heat of sublimation latent heat of vaporization latent Herschel effect latent homosexuality latent image latent instability latent load latent period Latent Photographic Image latent root latent virus latent-virus infection later later crudus Later Le dynasty laterad lateral	laten Laten We Lets Afspreken Latence latencies latencies latencies latencies latency latency latency latency latency Latency (engineering) Latency Active Promoter 2 Latency Associated Promoter 2 Latency Corrected Ensemble Average Latency Driven Distribution Latency Increase Latency Insensitive Protocol Latency Membrane Protein 2 Latency of the Wireless Link latency period latency period latency period latency period latency phase latency stage latency stage latency stage latency stage Latency time Latency-Associated Nuclear Antigen Latency-Associated Nuclear Antigen 2 Latency-Associated Promoter 1 latened lateness lateness lateness lateness latening latens latent latent latent latent Latent Agrarian Overpopulation latent allergy latent allergy latent allergy Latent Auto-Immune Diabetes of the Adult Latent Autoimmune Disease of the Adult latent bud Latent buds Latent Cancer Fatalities latent carcinoma latent class multinomial logit latent clostridial infection latent content latent content latent content latent content

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Results showed that the PrB60-treated mice exhibited a significant improvement in learning and memory (step-through latency time of 228+/-38 s compared to 101+/-32 s of the control group).

Effect of a polyphenol-rich wild blueberry extract on cognitive ... by Life Extension

A total of 300 men with premature ejaculation, diagnosed using the International Society of Sexual Medicine's definition (intravaginal ejaculatory latency time of a minute or less), participated in this study.

New topical spray is 'safe, effective treatment for premature ... by Asian News International

They now provide fast graphics, accurate synchronisation of up to 500 control channels, reduced latency time and complete management of safety procedures to eliminate any risk to the specimen under test.

Real-Time Ethernet for Critical Applications by John East / Automotive community

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