Updated April 12, 2016. These days you may need just a tetanus shot, or a vaccination against tetanus, diptheria and pertussis. Tetanus is a bacterial infection of the nervous system, also known as lockjaw. Symptoms include muscle stiffness, difficulty swallowing, muscle spasms and seizures.
The average MCAT score each year is somewhere around a 24 (8 in each section). A good (competitive at most MD schools) score is around 30 and a stellar score is somewhere above a 34 to 36 (competitive at the top medical schools in the country). A score of 36 or better would put you in the top 2% of the country.
From the table above, we can see that the 50th percentile scores for the old and new MCAT are around 25 and 500, respectively. As you might have guessed, an average MCAT score does not give you a very good chance for admissions to medical school. After all, half of all test takers score above average.