In some cases, these vaccines use epitopesâthe very specific parts of the antigen that antibodies or T cells recognize and bind to. Because subunit vaccines contain only the essential antigens and not all the other molecules that make up the microbe, the chances of adverse reactions to the vaccine are lower.
Tornadoes occur in many parts of the world, including Australia, Europe, Africa, Asia, and South America. Even New Zealand reports about 20 tornadoes each year. Two of the highest concentrations of tornadoes outside the U.S. are Argentina and Bangladesh.
This is a list of the deadliest tornadoes in world history. This list includes confirmed individual tornadoes which caused 100 or more direct fatalities. The deadliest tornadoes by far have occurred in a small area of Bangladesh and East India.In this 8,000-square-mile (21,000 km 2) area, 24 of the 43 tornadoes which are known to have killed 100 or more people occurred.This is probably due to the high population density and poor economic status of the area, as well as a lack of early-warning system.n this 8,000-square-mile (21,000 km 2) area, 24 of the 43 tornadoes which are known to have killed 100 or more people occurred. This is probably due to the high population density and poor economic status of the area, as well as a lack of early-warning system.