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 ...

The Medical Research Institute of New Zealand (MRINZ) has made a major breakthrough in determining what needle length is required to ensure successful intramuscular ...

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 infected. Too long, and the ...

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 ...