In particular, the exchange rate is the quantity of one currency required to buy or sell one unit of the other currency.* Jump straight to today's exchange rate or keep reading to understand what the exchange rate is and what that means to you.y using the current exchange rate, you see that $1 equals a little over .80 euros. Two US dollars equals about 1.65 euros; two euros equals about $2.40 in US money.
â¢ Vaccination is a type of immunization, but immunization is not necessarily vaccination alone. â¢ Vaccination is an artificial process, whereas immunization can be natural or artificial. Related posts: 1  Difference Between Cold and Flu. 2  Difference Between Measles and Chickenpox. 3  Difference Between DNA and RNA.
A vaccineâalso called a âshotâ or âimmunizationââis a substance that teaches your body's immune system to recognize and defend against harmful viruses or bacteria before you get infected.These are called âpreventive vaccinesâ or âprophylactic vaccines,â and you get them while you are healthy.reventive vaccines are widely used to prevent diseases like polio, chicken pox, measles, mumps, rubella, influenza (flu), and hepatitis A and B.