OCR Human Health and Disease- very stressed.Watch
Enough of the moaning... Any advice on how to tackle this paper? Am I the only one feeling like this?
Thanks in advance.
I've got ALL THREE modules on tue IM really scared and stressed. I just dont get plants, DNA
Smallpox was eradicated due to mass vacination programmes. People who've been vacinnated around in the late 1970s will also show some resistance to HIV infection since both viruses use the same surface receptors to gain entry to cells.
Tuberculosis is bacterial not viral (as smallpox) so vaccination is no use and antibiotic overuse is causing resistance.
Cholera is a waterbourne disease discovered by a chap called John snow, he made the water to cholera connection. So control would be water treatment (chlorination) and sewage treatment.
WHO collects health stats to better inform public I would think.
Generally. split diseases up into bacterial & viral and you'll have a better idea of why they can't be controlled, methods of spread etc.
Any more questions?
^^ ah fair enough, my point was viral vaccines are more common. Another reason why tuberculosis is difficult to erradicate is that it is a pain to diagnose as it presents with symptoms very similar to other diseases.
Yep and laods of symptomless carriers and you can vaccinate against TB its called the BCG vaccination though it isnt 100% succesful
So not worthwhile
Yes but thats because levels of TB are low in most areas. I had it. it hurt.
So not worthwhile
Not true. The rate of TB has risen in the uk in the past years, particuarly MDR-TB. Infact UK shows the highest rate of TB than any other country and the spread occurs due to influx of immigrants from other countries bringing TB in. This is particuarlarly a problem in East London at the moment.
If they stopped it, we'd have an epidemic of TB on our hands! (see i can post on a thread and revise at the same time!) lol
- vaccination is a preventative method, when the cost of prevention is greater than the cost of curing than the decision would be based on how fatal the disease is
- TB isn't fatal, its asymptomatic most times, thus it is viable to scrap the vaccine and just provide treatment
As for TB being endemic, well even if it were endemic, would we know? since its asymptomatic 99.9% of the time..
And most people take their medication wrong anyway (take my word for it, I work in a pharmacy) so its not going to be treated
And it is obviously endemic if there has been a rise in the incidence of TB again
PAST PAPERS PAST PAPERS PAST PAPERS
AND MARK SCHEMES
that is the only way
good luck to u alll
and pls pls pls look carefully at the mark schemes... (esp recent ones)
(fingers crossed for u all)