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.
The majority of tornadoes occurring in Asia have been reported in northeastern India, Bangladesh, Asiatic Russia, and Japan, though China and the Phillippines experience tornadoes of note as well.ost Japanese tornadoes are weak; a few are strong. Only one violent tornado  F4 on the Fujita Scale  has been documented prior to 2000. Tornado fatalities in Japan are surprisingly small considering the high population density of that nation (in contrast to Bangladesh as we shall see).