Hospital clean room is mainly used in modular operation room, ICU, isolation room, etc. Medical clean room is a huge and special industry, especially modular opeartion room has high requirement on air cleanliness. Modular opeartion room is the most important part of hospital and it consist of main operation room and auxiliary area. The ideal clean level near operation table is to reach class 100. Usually recommend hepa filtered laminar flow ceiling at least 3*3m at top, so operation table and operator can be covered inside. The patient infection rate in sterile environment can reduce more than 10 times, so it can less or not use antibiotics to avoid damaging human immune system.
Take one of our hospital clean room as an example. (Philippines, 500m2, class 100+10000)