immunity, vaccination and drugs
- Created by: vezting
- Created on: 03-04-16 15:25
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- immunity, vaccination and drugs
- types of immunity
- active natural is when you become immune from actually catching the disease
- active artificial is when you become immune from a vacination of a harmless amouth of the pathogen
- passive natural is when a baby becomes immune due to the antibodies it recieves from its mother via placenta or breast milk
- passive artificial is when you become immune after being injected with anti-bodies from someone else
- herd immunity
- when most people in the population are vaccinated,
- even if you are unvaccinated you are unlikey to catch the disease as theres nonone to catch it from
- ring immunity
- used in livestock when there's an outbreak of the disease
- the surrounding areas are vaccinated so the disease cannot spread past that specific area
- vaccines
- cause your body to produce memory cells against the pathogen
- these zntigens may be free or attched to a dead pathogen when injected into the body
- booster vaccines may be needed after some years and memory cells T and B have limited life span
- some vaccines are taken orally
- oral vaccines may get broken down by enzymes in the gut
- the molecule may also be too large to be absorbed from gut to blood stream
- influenza
- proteins on the surface of the virus act as antigens
- these prtoeins change reguarly
- this also means the vaccine has to keep changing and constant research has to be continuous, old vaccines wont be effective
- natural drugs
- penecilin is obtained from fungus
- some cancer drugs are made from soil bacteria
- daffodils can be used to treat alzheimers
- types of immunity
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