潜伏期

• Reading: せんぷくき
• Romaji: senpukuki
• Kanji breakdown: 潜伏 (senpuku) — latency, lying dormant; 期 (ki) — period, phase
• Pronunciation: /seɱ.pɯ.kɯ.ki/

Meaning

Incubation period; latent period. The interval between exposure to a pathogen and the appearance of first symptoms.

A medical and epidemiological noun formed from 潜伏 (latency, lying dormant) and 期 (period). Crucially, during the 潜伏期 a person may be infectious without knowing it, which makes this concept central to outbreak management. Used interchangeably with 潜伏期間 in clinical and journalistic language.

Examples

1. このウイルスの潜伏期は感染後2日から14日とされている。 The incubation period for this virus is said to be two to fourteen days after infection.
2. 潜伏期中は症状が現れないため、感染に気づかないことが多い。 Because no symptoms appear during the incubation period, people often don't realize they're infected.
3. 接触者全員に潜伏期が過ぎるまで自宅待機が求められた。 All contacts were asked to stay home until the incubation period had passed.

Usage Guide

Context: medicine, epidemiology, infectious disease, public health

Tone: technical, clinical

Origin & History

Sino-Japanese compound: 潜伏 (senpuku) means to lurk or remain dormant, derived from 潜 (submerge, conceal) and 伏 (lie prostrate, hide). 期 (ki) denotes a span of time or phase. The term was established in Japanese medical terminology in the Meiji era.

Cultural Context

Era: Modern

Generation: Adult

Social background: Universal