Add Yahoo as a preferred source to see more of our stories on Google. While the standard needle size for vaccination is 1 inch, it's recommended that women over 200 lbs. and men over 260 lbs. get ...

Most people don’t want to think about the needle part of getting a vaccine any more than they have to — but you might want to start. Your weight may mean that you need a larger needle than you assumed ...

SALT LAKE CITY, March 16, 2015 - When a salmonella bacterium attacks a cell, it uses a nanoscopic needle to inject it with proteins to aid the infection. If the needle is too short, the cell won't be ...

NEW YORK (Reuters Health) - People with serious allergies who are obese may find out in a moment of crisis their epinephrine injection needles aren't long enough to be effective, according to a new ...