Mosquitos soon became resistant and the only approach was to use more chemical sprays. Deaths of many birds were due to bio magnification caused by the extraneous amounts of toxins in water. Suzuki acknowledges how his faith on “predictive
They spread further by latching on to recreational boats that were later used in new, uninfected bodies of water.” states macalester.edu.
For example, the Bantu speaking people who spread iron technology and agricultural techniques throughout Africa, as well as the maritime migrations who cultivated foods and domesticated animals as they moved. However, migrations also brought about diseases, like the plague, which killed 30% of the population in Afro-Eurasia. Ultimately, the increase of interregional trade, in Afro-Eurasia, can be seen through the spread of religion and cultural diffusion, expansion, and knowledge/technology throughout different regions.
This presents how not only has virus been located in the US and West Africa but in another known location as
The Silk Road was a network of trade routes that reached from China to Europe, connecting the West and the East. The route would begin in China, then head west towards India, then it would go through the Middle East, then to Africa, and finally from Africa they would sail to Europe. This route is most widely known for circulating goods and cultures between these countries, but it is less known for its spread of disease, the Black Death. The Black Death, a plague caused by the Yersinia pestis bacteria, originated in China or Central Asia and was spread to Europe by fleas and rats that resided on ships and along the Silk Road. The Black Death killed millions in China, India, Persia (Iran), the Middle East, the Caucasus, and North Africa.
On Friday, September 9th, Officials in Miami gave the go-ahead to begin aerial spraying the insecticide Naled to interrupt the transmission of the Zika virus being spread by mosquitos. The number of people infected through local transmission in Miami has risen to 15 as of Monday, September 5th. The number of Zika cases nation wide has been confirmed by the Centers of Disease Control and Prevention to be a staggering 1,658 cases. All but one of these cases has been contracted through travel to Zika-infected areas. Over 400 of these confirmed cases involve pregnant women, seventeen of who have given birth to babies with birth defects and five of which have resulted in lost pregnancies.
It was passed on through fleas found on rats which were found on ships that were bring in trade from different
The bacillus infects people through the bite of infected fleas and rats (“BLACK DEATH”). This was especially prominent in urban and over populated areas (“Ecology and Transmission“). When Plagues strike people and animals alike die horrifically, in turn fleas need to find other sources of food. The people living in poor conditions often get forayed by flea bites, thus infecting them (“Ecology and Transmission“). It was seldom for the Black Death to be spread from person to person.
There are a few symptoms of this disease, one is the black tongue. High fever is the next symptom, the last and final symptom are blood filled boils usually found, everywhere. It soon had spread throughout Europe but the main question is how did it get there from Asia? One of the major reasons it spread was when the people were in contact with the fleas on black rats. Throughout Asia?s towns and streets were
Many factors played a key role in the extensive spread of the Black Death, or Bubonic plague, like insect bites or rodents, but the progressive trade networks were the most impactful. It started in Asia, in the 1300’s, but the new trade routes allowed it to spread across the Indian Ocean. Many people from many different backgrounds were negatively affected by this disease, and many didn’t know that they were exposed to the disease until it was too late. The Black Death had a variety of clinical forms, but no matter which type a person had, they were guaranteed death. This disease completely changed the medieval world and affected religions as well as many other ways of life or cultures.
One of the biggest summer nuisance would be the mosquito, but more specifically the Ades aegypti mosquito. The Aedes aegypti is the vector for yellow fever and the cause of the numerous deaths. In her book The American Plague: The Untold Story of Yellow Fever, The Epidemic the Shaped Our History, Molly Caldwell Crosby presents the idea that the mosquito is not just the only reason an epidemic occurred in the 18th century. This story accounts for the disease that broke out across the world and nearly destroyed almost all of North America’s population, which some believe could have been avoided by simple quarantine analysis and sanitary methods.
One example of disease being spread was in Athens between 430-429 B.C.E; it was entered through Greece via seaborne trade from Egypt and killed about 25% of its army and had weakened the city-state. Another example of disease was smallpox and measles; it affected the Roman and Han dynasty and contributed to their political collapse. Disease hit once again and affected the Mediterranean Sea coastal areas. Black rats that were disease infected had traveled via sea trade and killed 10,000 people per day during a 40 day period in Constantinople. The spread of disease has caused people to take precautions before interacting with one another and has help find unknown cures.
The Indian Ocean and Trans-Saharan trade routes shared products like textiles and ivory, enhanced the spread of Islam, and spread disease; but, due to the Indian Ocean’s trading style, spread diseases much quicker and spread a plethora of different
Zika is a perfect example of how infectious diseases and agents can quickly spread throughout the world due to the ease of travel, and therefore poses a major public health threat. The public health goal is to now figure out how to stop the spread of Zika by possibly eliminating the reservoir and vector, the mosquito. Prevention of Zika also depends on educating at risk populations/geographical areas on the disease and how to avoid becoming infected. There are also a multitude of neglected tropical diseases in parts of the world that receive little attention and therefore little research to prevent mortality and
Malaria is the most common disease in third world countries with a tropical climate; the disease is caused by a parasite called Plasmodium, which is transmitted through the bites of infected mosquitoes. In the human body, the parasites multiply in the liver, and then infect red blood cells. Symptoms of malaria include fever, headache, and vomiting, and usually appear between 10 and 15 days after the mosquito bite. If not treated, malaria can quickly become life-threatening by disrupting the blood supply to vital organs. In many parts of the world, the parasites have developed resistance to a number of malaria medicines.
