WELCOME TO ALLAN JOHNSON'S BLOG
Saturday, 12 April 2014
Popularity Vote Contest 2014 Miss Africa #NewJersey
Friday, 11 April 2014
African immigrants to the U.S. are among the most educated groups in the United States. Some 48.9 percent of all African immigrants hold a college diploma. This is more than double the rate of native-born white Americans, and nearly four times the rate of native-born African Americans. According to the 2000 Census, the rate of college diploma acquisition is highest among Egyptian Americans at 59.7 percent, followed closely by Nigerian Americans at 58.6 percent..,
Saturday, 29 March 2014
WHY EBOLA THE MOST DEADLY VIRUS TO AFFECT HUMANS.
Ebola is the nightmare virus. It kills ninety percent of people infected, and was for some time feared as the second coming of the plagues of
the 1400s. Why is this one virus so much more deadly than other viruses?
Ask people to pick a virus that might, under the right circumstances, end the world, and they'll generally say "ebola." This is a virus that's known for its deadliness, and it earned its reputation.
There are five different strains of ebola, and each is named after the zone in which it first turned up. Ebola's least deadly strain is Reston, which was first discovered in monkeys in a quarantine
facility in Reston, Virginia. It was traced to the Philippines, where it seems to reside in both wild and domesticated pigs. This discovery caused a panic in the US, a bestselling book, and a blockbuster movie, but this version of the virus is completely asymptomatic in humans. It has never killed anyone.
Ebola's deadliest strain is Zaire. It was the first strain discovered in 1976, when it killed nearly 300 people. It's a hemorrhagic fever, which means it attacks the vascular system, wearing
down blood vessel walls and preventing blood from clotting. All hemorrhagic fevers are dangerous, and none have any real course of treatment to attack the virus, as opposed to drugs meant to minimize complications and techniques prevent dehydration. A relative of ebola, Marburg fever, kills forty-to-eighty percent of those infected but the Zaire strain of ebola has a ninety percent
fatality rate. Of the hemorrhagic fevers, why does ebola stand out? Researchers have found that people have died from ebola without ever having an immune
response to the virus. The first lines of the defense of the immune system are dendritic cells. Dendritic cells are long, branched cells that line nearly every part of the body that has contact with the outside world. They cover the skin so completely that they were mistaken for nerves by early anatomists. They also crowd the mucosal linings of the lungs, nasal passages, and digestive
system. When they come into contact with something that shouldn't be in the body, they grab it, break it apart, and take it to the immune system and display it - and get ripped apart themselves for their trouble. Then the body, properly alerted, starts working on a counterattack. Ebola, particularly the Zaire strain, has the ability to prevent the dendritic cells from manufacturing proteins that cause the immune system to destroy the dendritic cells when they're infected. The ebola virus doesn't set off an alarm, and can keep infecting the body at will. Researchers have shown that mutating the virus in any of four areas destroys its stealth capabilities. Scientists have also figured out how ebola gets into cells, and have developed an antibody that can prevent infection . Perhaps it
won't always be the terror it is now.!!!!!
Sunday, 31 March 2013
FOREIGN AID, A BLESSSING OR A CURSE.
Africa has made an enormous difference , and in a way the West has rediscovered Africa in response to China’s , India ’s, Brazil ’s growing presence in Africa. So in a sense I think the bank will also allow emerging powers to develop new ideas and practices that are difficult to implement in the existing institutions. ” Second guest Moeletsi Mbeki is a vocal critic of South Africa and other African governments and the author of Advocates for change: How to overcome Africa’s challenges . His brother Thabo Mbeki was the second president of South Africa after Nelson Mandela .Mbeki explains that China has access to high levels of skills in Africa in industries such as mining and that problems arise when these relationships are not regulated. “ I think there is a great deal of
exaggeration about China ’s relations with African countries . I must say the regulations of the African countries are really the problem , rather than China as such ,” he says. Third guest Joanna Kerr heads up ActionAid International, one of the world’ s most influential NGOs. The organisation is present in over 45 countries and employs thousands of people worldwide . Redi asks her if aid is addictive to underdeveloped countries. “ Aid is going to exist for the current moment … Not all aid is the same , there are very different forms of aid … we refer to real aid, aid that actually tackles poverty , that which promotes human rights, ”