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Hand washing

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									Epidemiological
aspects of Hand
washing
Dr Paba Palihawadana
Chief epidemiologist
Hand washing

   Why bother
    your hands are a common
    route for germs to spread.
    If you don’t wash your hands
    harmful germs can spread to people
    around you.
When do you wash your hands
Before
 prepare food
 Eat
 Cooking
 Feeding
When do you wash your hands
After
 Go to the toilet
 Handled uncooked food,
  meat, poultry
 Blow your nose
 Cough, sneeze
 Handle rubbish
 Tend to someone sick
Why hand washing is important
 Personal hygiene
 Prevent infections
How does diseases transmit
 Feco oral route
 Direct contact
What are the common diseases
spread by contaminated hands
      Diarrhea
      Bacillary dysentery
      Typhoid fever
      Viral hepatitis
      Common cold
      Influenza
      Eye infections
      Skin infections
Survival times of germs on
surfaces
Germ             Survival time   Possible illness
Enterococcus     40 minutes      UTI, wound
                                 infections
Staphylococcus 24 hours          Skin, internal
Aureus                           infection,
Salmonella     24 hours          Intestinal infec
Influenza A ,B   24-48 hours     Flu
Rhinovirus       2-3 days        Common cold
Hepatitis A      30 days         Hepatitis
          Incidence of notified cases of water borne
          diseases – Sri Lanka
                  12000
Number of Cases




                  10000

                   8000

                   6000

                   4000

                   2000

                     0
                          2000   2001        2002   2003     2004   2005    2006   2007   2008-
                                                                                          up to
                                                      Year                                2nd Q
                                        VH           Ent. Fever       Dysentery
Incidence of Viral Hepatitis, Sri Lanka
2006 – 2008 (up to 2nd quarter)
                    1300
                    1200
                    1100
                    1000
                    900
  Number reported




                    800
                    700
                    600
                    500
                    400
                    300
                    200
                    100
                      0
                           Jan   Feb   Mar    Apr   May   Jun     Jul   Aug    Sep   Oct   Nov   Dec

                                                           Month
                                             2006          2007               2008
Prevention
                Hand washing
                 How     soap & water
                         70% Alcohol

								
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