Specific diseases which came in India from other countries

PLAGUE 

• Bubonic plague is a deadly flea-borne diseases which is caused by  entero bacteria Yersinia pestis.

• Primarily, spread by fleas that lived on the black rat (an animal that originated in South Asia) and spread to Europe by the sixth century.

• Symptoms:   swelling of lymph node accompanied by a high fever and within 4 to 7 days of infection more than half of the victims would die.

• The first outbreak of plague occur in China spread in two countries around the Indian Ocean Red Sea and Mediterranean.

MEASLES 

• Highly contagious airborne virus spread by contact with oral and nasal  fluids.

• Incubation period is 4 to 12 days.

• Symptoms - runny nose, cough, red eyes, extreme high fever and  rashes.

• Measles is an endemic disease means it is present in a community. In 1529 outbreak in Mexico killed two third of the population . in 1963 ,vaccine decline the number of reported occurrences by 98%.