Question

Lab Background

This lab tests the effectiveness of hand washing, and illustrates the importance of asept hospital environment ic technique in the As a fetus dev bacteria for the rest of its life. elops in utero, the skin is sterile. During and after birth, a baby's skin is colonized by many As an individual ages and changes environments, the microbial population changes as well. Some of your skin microbes remain more or less permanent, and these are called normal flora, or resident microbes. Microbes that change weekly or daily as you touch surfaces are called transient microbes. There is evidence that your resident microbes are genetically unique to you. These symbiotic organisms can benefit as well as harm us. They can inhibit the growth of infectious transients, and strengthen the host immune response. Normal flora can become significant source of disease as well. If they are allowed to overgrow, or are introduced into deeper tissues they can cause disease. A resident skin microbe, Propionibacterium acnes resides in sebaceous glands and can cause acne different Nosocomial infections are defined as infections that a patient develops while in the hospital for a ple, going in to have surgery and developing pneumonia in the hospital. Guidelines today fronm the CDC state that "hand washing is the single most important procedure for preventing nosocomial infections" yet recent studies in hospitals show hand washing rates as low as 31%. A layer of oil and the structure of the skin prevents hand washing from removing all bacteria. Soap helps remove the oil, and scrubbing will maximize the removal of microbes. Skin can never be sterile however. In this exercise, you will examine the effectiveness of washing skin with soap and water. Only aerobic organisms that are capable of growing on nutrient agar will be observed, so only a minimum number of skin microbes will be involved

Questions...

Answer 1

1,yes, the results are there same I expected..

2, propionibacterium ( resident microbes)

3, gram negative bacteria ( transient microbes)

4, it will inhibit the growth of bacteria under the gloved hand..Rapid multiplication of skin bacteria occurs under surgical gloves if the people didn't wash the hands before surgery..Surgical hand should be against of bacteria and fungi.Alcohol based hand rub can kill transient bacteria and it will prevent nosocomial infection..

5, Dr. Ignaz semmelwies, he saved women and newborn from feverish and agonizing deaths by hand washing..

6, The mix of species and strains in a individual microbiome is highly individual, molecular signature can be used as crime scene because microbiome can vary from gender, age, and life style..so this data can be subject for this scene..