Time interval between Entamoeba histolytica infection and liver abscess formation is typically which weeks?

• A. 1-2 weeks
• B. 8-20 weeks
• C. 6-8 months
• D. 1 year

Answer: (B)

Invasive amebiasis can spread from the intestinal tract to the liver via the portal circulation, leading to an amebic liver abscess after a period of time rather than immediately. The hepatic complication doesn’t occur right away; it typically emerges after several weeks to a few months following the initial intestinal infection. This latent period is usually around 2 to 5 months, which translates to about 8–20 weeks. Shorter intervals, like 1–2 weeks, are too quick for the spread and abscess formation, while intervals of 6–8 months or a year are much longer than what is commonly seen in this progression. So the window of 8–20 weeks best matches the usual timeline.