cx-ncert-theory-class12-chap07-human-health-and-disease-en-part03

<p><Success style = "float: center; text-align: center; font-size:30px"><B>Human Health and Disease</B></Success></p>
<p><Primary style = "float: center; text-align: center; font-size:26px"><B>AIDS</B></Primary></p>
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<p>So, people who are at high risk of getting this infection includes - individuals who have multiple sexual partners, drug addicts who take drugs intravenously, individuals who require repeated blood transfusions and children born to an HIV infected mother</p>
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<p>Do you know–when do people need repeated blood transfusion? Find out and make a list of such conditions</p>
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<p>It is important to note that HIV/AIDS is not spread by mere touch or physical contact; it spreads only through body fluids</p>
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<footer style= "font-size:18px">Introduction $\rarr$ Common Diseases in Humans $\rarr$ Immunity $\rarr$ <span style= "color:blue">AIDS</span> $\rarr$ Cancer $\rarr$ Drugs and Alcohol Abuse</footer>

<p><Success style = "float: center; text-align: center; font-size:30px"><B>Human Health and Disease</B></Success></p>
<p><Primary style = "float: center; text-align: center; font-size:26px"><B>AIDS</B></Primary></p>
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<p>It is, hence, imperative, for the physical and psychological well-being, that the HIV/AIDS infected persons are not isolated from family and society</p>
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<p>There is always a time-lag between the infection and appearance of AIDS symptoms</p>
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<p>This period may vary from a few months to many years (usually 5-10 years).After getting into the body of the person, the virus enters into macrophages where RNA genome of the virus replicates to form viral DNA with the help of the enzyme reverse transcriptase</p>
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<p>This viral DNA gets incorporated into host cell’s DNA and directs the infected cells to produce virus particles (Figure 7.6)</p>
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<footer style= "font-size:18px">Introduction $\rarr$ Common Diseases in Humans $\rarr$ Immunity $\rarr$ <span style= "color:blue">AIDS</span> $\rarr$ Cancer $\rarr$ Drugs and Alcohol Abuse</footer>

<p><Success style = "float: center; text-align: center; font-size:30px"><B>Human Health and Disease</B></Success></p>
<p><Primary style = "float: center; text-align: center; font-size:26px"><B>AIDS</B></Primary></p>
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<p>This is repeated leading to a progressive decrease in the number of helper T-lymphocytes in the body of the infected person</p>
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<p>During this period, the person suffers from bouts of fever, diarrhoea and weight loss</p>
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<p>Due to decrease in the number of helper T lymphocytes, the person starts suffering from infections that could have been otherwise overcome such as those due to bacteria especially Mycobacterium, viruses, fungi and even parasites like Toxoplasma</p>
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<hr>
<footer style= "font-size:18px">Introduction $\rarr$ Common Diseases in Humans $\rarr$ Immunity $\rarr$ <span style= "color:blue">AIDS</span> $\rarr$ Cancer $\rarr$ Drugs and Alcohol Abuse</footer>

<p><Success style = "float: center; text-align: center; font-size:30px"><B>Human Health and Disease</B></Success></p>
<p><Primary style = "float: center; text-align: center; font-size:26px"><B>AIDS</B></Primary></p>
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<p>Making blood (from blood banks) safe from HIV, ensuring the use of only disposable needles and syringes in public and private hospitals and clinics, free distribution of condoms, controlling drug abuse, advocating safe sex and promoting regular check-ups for HIV in susceptible populations, are some such steps taken up</p>
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<p>Infection with HIV or having AIDS is something that should not be hidden – since then, the infection may spread to many more people</p>
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<p>HIV/AIDS-infected people need help and sympathy instead of being shunned by society</p>
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<footer style= "font-size:18px">Introduction $\rarr$ Common Diseases in Humans $\rarr$ Immunity $\rarr$ <span style= "color:blue">AIDS</span> $\rarr$ Cancer $\rarr$ Drugs and Alcohol Abuse</footer>