Microneedle patch a painless way to deliver vaccines

The video explains the use of a microneedle patch for vaccine delivery. The patch contains hundreds of microscopic needles that penetrate the skin to a depth of half a millimeter, which is sufficient to deliver the vaccine without causing pain. The vaccine is embedded in a film that dissolves over days or weeks, gradually releasing the vaccine into the body.

What is the primary function of the microneedle patch?

• To measure skin temperature

• To provide pain relief

• To monitor blood pressure

• To deliver a vaccine

How deep do the microneedles penetrate the skin?

• Two millimeters

• One millimeter

• Half a millimeter

• Three millimeters

Why don't the microneedles cause pain?

• They are coated with anesthetic

• They dissolve instantly

• They are too short to reach pain receptors

• They are made of soft material

What happens to the film once inside the skin?

• It remains intact

• It hardens

• It dissolves over time

• It evaporates

Over what period does the vaccine release occur?

• Over a few hours

• Instantly

• Over several months

• Over days or weeks