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Monday, May 4, 2009

Biomedical waste Disposal

Color of bag

Type of container

Waste type

categories

Disposal mode

Yellow

Plastic bag

Biological waste, { Human ( 1 ) , Animal( 2  ), Microbial & biotechnology ( 3 ) ,Blood & fluid contaminated non biological substances ( 6 ) }

1 , 2 , 3 & 6

Incineration, deep burial,

Red

Container/Bag

Microbial & biotechnology wastes ( 3 ) , Blood & fluid contaminated non biological substances ( 6 ) , non sharp disposable substances( 7 )

3 , 6 , 7

Autoclave, microwave, chemical treatment

Blue/white transculent

Bag/puncture proof container

Disposable nonsharps ( 7 ) & sharps ( 4 )

4 & 7

Autoclave, microwave, chemical treatment , destruction & shredding

Black

Plastic bag

Discarded & outdated drugs ( 5 ) , ash from incinerator ( 9 ) , chemicals: disinfectants, insecticides ( 10 )

5 , 9 , 10

Land fill

 

Incidence & prevalence

Incidence

Prevalaence

Rate

Ratio

Only new cases

Old + new

Prevalence = incidence X duration of illness

 

Type of epidemic

Epdemic curve

Other imp points

Examples

Point source

Sharp raise and shar fall

  1. All cases With in 1 incubation period
  2. Epidemic is explosive
  3.  

Bhopal gas tragedy, food poisoning

Vector born diseasest

Soft tick: QRS : Q fever, relapsing fever , soft tick

Hard tick :tick typhus, viral encephalitis, viral hemorrhagic fever, KFD, Tularemia, tick paralysis, human babesiosis

Mites: itch mite: scabies

: trombiculid mite: scrub typhus, ricketsial pox

Typhus: epidemic typhus: louse

   : endemic ( or ) murine  typhus: rat flea

   : scrub typhus: tromboculid mite

   : tick typhus: hard tick

Louse: PTR:  ePidemic Typhus , Trench fever, Relapsing fever

Relapsing fever: soft tick & louse

Vector born diseases

Type of mosquito

Disease

Anopheles

Malaria, filaria ( not in India )

Culex

Bancroftian filariasis, japanese encephalitis,

West Nile fever, viral arthritis

Aedes

Yellow fever, dengue, chikungunya, rift valley fever,

filaria

Mansonoides

Malayan( brugian ) filariasis, chikungunya

Source: table 5 page no: 626 park 19th edition

Vector born diseases

Vector

Disease

Anopheles

Malaria, filaria ( not in India )

Culex

  1. Bancroftian filariasis,
  2.  japanese encephalitis,
  3. West Nile fever,
  4.  viral arthritis

Aedes

  1. Yellow fever,
  2.  dengue,
  3. chikungunya,
  4. rift valley fever,
  5. filaria

Mansonoides

  1. Malayan( brugian ) filariasis,
  2.  chikungunya

Sand fly

  1. Kala azar,
  2. oriental sores,
  3. oriental fever,
  4. sand fly fever

Tse-Tse fly

African sleeping sickness

Louse

  1. PTR:  ePidemic Typhus ,
  2. Trench fever,
  3. Relapsing fever,
  4. Pediculosis

Rat flea

  1. Bubonic plague,
  2. Endemic Plague,
  3. Chiggerosis,
  4.  hymenolepis diminuta

Black fly

Onchocercosis

Reduvid Bug

Chaga's disease

Hard tick

  1. Tick typhus,
  2. viral encephalitis,
  3. viral hemorrhagic fever,
  4. KFD,
  5. Tularemia,
  6. tick paralysis,
  7. human babesiosis

Soft Tick

  1. QRS : Q fever,
  2. Relapsing fever ,
  3. Soft tick

Thrombiculoid Mite

  1. Scrub Typhus,
  2. Ricketsial Pox

Itch Mite

Scabies

Cyclops

  1. Guinea worm,
  2. fish tape worm