What are the different types of containment?

There are several different types of containment across various fields, each with a specific purpose of preventing spread. In Cold War geopolitics, types of containment included economic containment through the Marshall Plan that rebuilt Europe to resist communism, military containment through NATO and proxy wars in Korea and Vietnam, and diplomatic containment through alliances and treaties that isolated the Soviet Union. In public health, types include quarantine which isolates sick individuals, isolation of exposed individuals, cordon sanitaire which seals off an entire geographic area, and social distancing measures to contain spread. In nuclear engineering, there are primary containment which is the steel and concrete dome around the reactor vessel, secondary containment which is the outer building, and tertiary containment which includes filtered venting systems. In environmental engineering, types include physical containment using liners, caps, and slurry walls to contain contaminated soil, hydraulic containment using pumps to control groundwater, and boom containment for oil spills. In laboratory biosafety, containment levels range from BSL-1 for low risk to BSL-4 for deadly pathogens, each with increasing barriers like cabinets, airlocks, and protective suits. In business and finance, containment includes cost containment, damage containment, and risk containment. All types share the principle of creating barriers to limit spread and protect surrounding areas.