Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Infectious diseases:
Some of you may have heard about the great bubonic plague, a fatal disease of the blood, spread by fleas and respiratory secretions. It occurred in epidemic proportions throughout most of Europe from thirteenth to nineteenth century. A major outbreak of plague in India occurred in 1896 and lasted for fifteen years. It swept through villages and towns and killed over eight million people. It seems that such diseases were common in ancient times. Increased trade and commerce and resultant human traffic made them reach new places all over the world. Similarly, diseases such as small pox, measles, influenza and cholera spread easily from one person to another, and from one area to another.
The reason for the spread of these diseases, and many others, was not known till the nineteenth century. Till then, such diseases always left people struck with terror because their causes were shrouded in mystery. Due to ignorance, demons and evil spirits were blamed for causing these diseases. In India, it was believed that these diseases weie a punishment from angry deities. A new Goddess was created and held responsible for each disease. For example "Stela Ma" is said to cause small pox. People worshipped her to get cured from this disease. It would be interesting to note here that small pox has been eradicated from this planet due to a planned world-wide vaccination campaign. Plague outbreaks do not occur any more.
The poem given in the margin which children often sing while playing, is jointly sung at a memorial service outside the village Eyam in England to pay homage to the townsfolk who gave their lives three centuries ago to save others from the disease. These people got affected by plague. In order to stop the spread of disease they confined themselves in their village to save others. The ring of rosies refers to tbe rose-shaped splotches on a plague victim. Posies were little flowers used to ward off the evil spirit. And Achoo! means sneezing which accompanied the disease. The last line means that they all died. You must have experienced that if somebody in the family is suffering from a cough or cold you often catch it. Do you know why?
Because these diseases are caused by germs or "microbes" which can go from one person to another. "Microbes" means minute organisms or germs. They are so small that we cannot see them with the naked eye. Some can be seen with the help of an ordinary microscope while others are smaller still and can be seen only under very special microscopes. Certain infectious diseases are caused by worms. We will also discuss how they spread from one perso- another.
Food allergies: Food allergies are different from food fads. Certain fds seem to have strange reactions on some people. Probably, you have come across a person who got skin ra
To show which types of soil hold water best Tie cloth over the end of various lamp chimneys and then fill every one to within 8 cm of the top with dissimilar types of soil. Use
what the different types of volcanoes are?
what is combustion?
Explain Yawing Reflex Actions - Respiratory Pocess Yawning: It is a deep inspiration drawn through open mouth. Low oxygen tension in the blood may be the cause of yawning.
how much far sun from earth
Explain Isoelectric pH Isoelectric pH: Many ionizable groups are present in a protein molecule. Depending on the pH of the medium, some of these groups act as proton
The developing brain is highly plastic in humans. The downside of this is that the developing human is, compared to other species, practically helpless and without any skills requi
Determine about the Physico-chemical parameters The possible combination of various elements found in the earth's crust gives rise to a large number of minerals. Out of all the
Explain Cardiac Compression - Decreased Cardiac Output Rapid accumulation of fluid in the pericardial sac decreases ventricular distensibility leading to a decrease in cardiac
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd