As healthcare-associated infections increase, healthcare workers need to take special precautions to control infections. HAIs are healthcare-acquired infections that previously did not exist prior to hospitalization. Today the risk of infection is higher than ever, due to the large number of elderly people, the growing AIDS population and chemotherapy. HAIs are the number one problem encountered in patients. Therefore it is necessary to take obvious special precautions to avoid the spread of the infection, including treating blood, cuts or open wood as if they were infected, washing your hands before putting on gloves and after taking them off, not touching clean surfaces while you have contaminated hands, wear gloves if there is a possibility of touching blood or other secretions, bag all contaminated objects, and clean objects that may be contaminated with infectious waste. Before advances in infection control, surgery was only used for life-threatening conditions, because, if the patient survived the surgery, it was almost inevitable that an infection would occur. Fortunately, in the 19th century, advances in infection control reduced the risk of surgery, and surgery became much more common. Infection was the main factor contributing to the infection rate, so until the 19th century surgery was only used as a last resort. In the early 1500s Hieronymus Fracastorius claimed that perhaps infections were caused by invisible living seeds. He described three modes of transmission: direct contact, indirect contact with fomites, and airborne transmission. Subsequently Amboise apparently believed that the infection was also caused by the environment. Apparently he noticed how important it was to have a... middle of paper... a dress by untying the lower cord first and then the upper one. After untying both laces, detach them from the neck and shoulders from the inside of the dress only, it should come off easily. After the inside-out gown has been removed, also dispose of it in an appropriate waste container. The final step is to remove the respirator and remember that the front is all contaminated, so you need to grab the ties from behind and pull forward to remove the mask, then throw the respirator into a waste container. As healthcare workers we need to take special precautions to protect ourselves and others from infection. As the risk of infection increases, it is even more difficult to protect ourselves. So knowing the correct steps to maintain good hygiene and sanitation is a must. Today, infection control is as important as understanding the diseases and conditions themselves.