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Killing germs could be placed in a number of sub-branches of science. But the two major banches would be Biology and Chemistry as non-biological chemical agents such as isopropanol or chlorine and other antiseptics/disinfectants are used to break down the biological organisms of microscopic bacteria.
To suggest that germs evaporate would be to suggest that germs are liquid. Germs are, of course, not liquids, so therefore they cannot evaporate.
Once surgery is underway, transplant surgery can be stopped totally before the diseased organ is removed. There have been a small number of surgeries when it was discovered that the new organ would not work in that patient. But, generally speaking, once a surgery has begun, it is completed.
You can do, but there are other ways of contracting it too. One of the common surgical routes would be if during surgery the patient's bowel was accidentally perforated, which would allow some of the contents to contaminate the blood stream. However it is also possible to contract septicemia from allowing particularly nasty germs to come into contact with open cuts on your skin (you would have to be unlucky for this to happen, but it is possible).
The body is under constant attack by germs. Luckily thanks to the protective nature of our skin, germs cannot attack the bodily too easily. Without skin, germs would ultimately plague and take over the body as a result.
An ophthamologist would be the doctor that would carry out eye surgery. The most common types of surgery are Lasik surgery, cataract surgery, and glaucoma surgery.
probs die
This would be a rare situation, but if germs get into the cerebro-spinal fluid, then they would be able to travel through the spine.
Saltwater can be used as an antiseptic, however, much better antiseptics are available; I would recommend polysporin cream.
Walk-in showers have no more germs in them than do regular showers. If you clean your walk-in shower as frequently as you would a regular shower, then you will not need to worry about germs.
The "epidermis". "epi" means "outer" and "dermis" is "skin" The germs would be on the surface of your skin.
There would be substancially more deaths globally as infections would set in more often than not on an open cut. Excluding if you were to use aseptics.