Students in microbiology must understand and follow the rules in the lab. Student should be:
laboratories classified as:
1.biosafety level I (BSL)
2. biosafetY leve (BSL2)
organisms used in BL2
laboratory are classified as:
CAUSATIVE AGENTS
BIOSAFETY
-organisms are well-characterized strains of microorganisms not known to cause disease in healthy human adults. Precautions in this lab include general laboratory safety.
BSL1
example of organism in bsl 1:
Escherichia coli,
Staphylococcus xylosus,
Bacillus mega
organisms are moderate-risk microorganisms associated with less serious human diseases whose potential for transmission is limited and a proven treatment for the disease exist.
BSL2
organisms are high-risk microorganisms with a true potential for infection by aerosols and in which the resulting disease may have serious or lethal consequences
BSL 3
example of organism in BSL 3:
Mycobacterium tuberculosis
Foot-and-mouth disease virus,
Bacillus
organisms are easily transmitted, very-high risk
microorganisms which cause life-threatening diseases for which there is no vaccine or
therapy.
BSL 4
“space suits” with an external oxygen supply, and precautions such as chemical showers must
be taken before exiting in this bsl:
BSL 4
Example of BSL4
Ebola virus
Marburg virus
Lassa fe
Avian flu virus
Steps of risk management process:
starting point for the laboratory investigation is the taking of,
SAMPLES
between samples. The samples should
be:
Sample collection from live animals:
types of sample:
to examine microorganisms which can’t
be seen by naked eye
MICROSCOPE
to heat or boil solution in laboratory
BUNSEN BURNER
2 equipment use to sterilize the equipment medias and other solutions
to preserve the samples, media, reagents
and other specimen
REFRIGERATOR
creates a rotating magnetic field
MAGNETIC STRRING PLATE
used for bacterial or fungal cultures
INCUBATORS
to rescue the exposure of the operator
and the lab contamination
SAFETY CABINET