Question: “Staphylococcus bacteria has the abitily to talk to the others around it using chemical signals” can you explain more about this please ?

Robert Hampson answered on 10 Nov 2014:

Antibiotics revolutionised medicine. Before antibiotics, to perform an amputation a barber surgeon would saw the patient’s limb off, pour alcohol on the end and burn it to prevent infection. Now with antibiotics and anaesthetics, they can put the patient to sleep, then carefully and precisely remove the damaged area with scalpels etc. and give antibiotics before and after the operation to prevent infection.

In World War 1 (just before antibiotics), many soldiers died from trench foot and there were major problems with boils and minor infections, on the arrival and large scale production of antibiotics these problems basically disappeared. In World War 2 many soldiers would still suffer from these ailments, they were easily treated with antibiotics.