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.
South Carolina Tornado Climatology: 1950-2015 (.pdf format) by Mark Malsick, South Carolina State Climate Office. Tornadoes in the United States are observed in every state. South Carolina ranks 23rd in the United States for annual tornado frequency during the period 2000-2015 (Figure 1). In the period from 1950 through 2015 South Carolina saw 948 confirmed tornadoes, an average of 14 tornadoes per year (Figure 2).