Vaccine
The oral Polio vaccine is usually pink. A vaccine vial monitor (VVM) is a thermochromic label put on vials containing vaccines which gives a visual indication of whether the vaccine has been kept at a temperature which preserves its effectiveness. Some times the vaccine is exposed to dry ice or to room temperature and that can be read by the VVM label.
Not really sure what you mean by leg vaccine. Please rephrase the question to clarify what the question is
No because it means exactly what it seems to mean. "Caked" means coated or layered, so something is coated or layered in mud.
925 sc means "925 silver coated". The item is made of some different material, which is coated/plated with 925 silver.
Metal stands up to heavy weight and will last so long as keep it dry and well coated.
TD stands for tetanus-diphtheria
It means that they tested for the vaccine in your body and it tested positive aka, vaccine is already inside you. No need for another
A vaccine is a medicine for immunity and does not have "seconds". If you mean how many seconds does it take for the vaccine to be administered, then the injection of a vaccine usually only takes 5-10 seconds to put the vaccine into your body with a needle since the amount of vaccine needed is so small. If the vaccine is available in a nasal mist, the inhalation of a nasal mist takes as long as it takes for you to sniff. If you mean how long will the immunity last before you need a booster vaccination, you should check with your doctor about the type of vaccine you are getting (e.g. influenza, bacterial pneumonia, etc.). Depending on your age and the type of vaccine, some vaccinations need boosters every so often. Your doctor can tell you how long the one you are getting lasts.
C stands for coated; U for uncoated.
Coated with a deposit of copper, usually greenish or bluish in color.
Bronze or other metal coated with gold.