âIn a clinical trial involving thousands of adults 60 years old or older, Zostavax reduced the risk of shingles by about half (51%) and the risk of post-herpetic neuralgia by 67%. While the vaccine was most effective in people 60-69 years old it also provided some protection for older groups.Research suggests that the shingles vaccine is effective for at least six years, but may last longer. Ongoing studies are being conducted to determine how long the vaccine protects against shingles.â.. I am totally confused about the shingles vaccine. I was immunized three years ago at a cost of $220. Since I did not have insurance at the time I had to pay for the shot out of pocket. Now I read that protection from the vaccine wanes over time.
The speed of light is 186,282.397 miles per second. So in one minute, it travels 11,176,943.82 miles (about 1/3 the distance from the sun to Mercury) In one hour, 670,616,629.13 miles (about 3/4 the distance from the sun to Jupiter) In one day, 16,094,799,099.08 miles (about 1.7 times the distance from the sun to the furthest point of the orbit of Eris) In each case, this would be the time for a radio signal to travel these distances. Source(s): Speed of light at http://en.wikipedia.org/wiki/Speed_of_li...
A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km.