Human Health and Diseases — BIOLOGY STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Diseases5 Marks
Question
Vaccination.
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Answer
Vaccines are prepared from inactivated pathogen, in the form of protein or sugar from pathogen or dead form of pathogen or toxoid from pathogens or attenuated pathogen.
These when they are administered to a person to protect against a particular pathogen, it is called vaccination.
Vaccination ’teaches’ the immune system to recognize and eliminate pathogenic organism. Because, already in the body the vaccine is injected and body has made antibodies in response to it. Thus, body is prepared before the attack, if at all it is exposed to pathogen.
Thus, it is an important form of primary prevention, which reduces the chances of illness by protecting people. It works by exposing the pathogen in a safe form.
Vaccinations control spread of diseases like measles, polio, tetanus and whooping cough that once threatened many lives.
Vaccination controls the epidemic outbreak of diseases, if all the people Eire pre-vaccinated.
Some hazardous diseases like small, pox and polio have been completely eradicated by the vaccination.
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