What are other methods to kill disease causing bacteria besides disinfectants?

Answer 1

If you mean limiting disease-causing microbes, then good hygiene is key - e.g. washing hands especially after blowing nose, covering nose with the front of the elbow when sneezing, etc.

But for actually killing bacteria, antibiotics may be beneficial against certain types. Temperature is another method - heat (i.e. pasteurization, boiling, autoclave) may kill bacteria, refrigeration may slow their reproduction. pH is also important - many bacteria can't survive an acidic environment. Also, other microbes may outcompete pathogenic bacteria, thus limiting their spread. Finally, limiting available iron stores in the body reduces the "fuel" for many pathogenic bacteria.

Answer 2

Through hypoosmotic and hyperosmotic solutions. Like aqueous NaCl. This would kill the bacteria since it could either make the bacterial cell, shrink and eventually die; or burst and certainly die. But there are some exemptions to this--bacterias that could adapt to the osmotic pressure of the environment and their cell

Answer 3

pasturization is the original. that uses near boiling heat for a period of time. ultra purification filters can separate bacteria from simple compounds. nuclear radiation can be used, by putting a food product through a high density neutron field at a reactor.

Answer 4

heat. e.g. hot water, steam, flame.
Salt. Antibiotic.