When you get two doses of a vaccine, you might assume that it doesn't matter which arm gets the shots. But some evidence suggests that it does.

Vaccines teach your immune system to recognize pathogens, but sometimes your body needs a bit of a reminder.

From MMR boosters to tetanus, you'll probably get a lot of shots in your life. And one thing you might notice is that some of them don't feel like much, but some of them can make your arm reallllly sore! Why is that?

Even when you know what you want to do, sometimes actually doing the thing is hard. Luckily, research suggests a few ways you can make it a little easier.

Splinters are gross, but you might want to watch this before grabbing the tweezers.

In this video, UNICEF introduces the UNI Ject Vaccine, a new device designed to combat tetanus in Mali. The vaccine is easy to administer and can withstand high temperatures, making it suitable for areas with limited refrigeration....

Every year thousands of babies die from a disease that strikes in the very first days or hours of life. Today tetanus affects only the world’s poorest and most remote communities – but it still claims the lives of about 150,000 babies...

Members of the public are at risk of catching illnesses from the flood water left behind by Hurricane Florence.

So we know that there are unbelievable numbers of bacteria inside of us, and some of them are good. So what about the bad ones? What do those do? How do they harm us, exactly? What defenses do we have against them? Let's take a look!

Understanding Vaccines - Viruses/Immunity Set - Part 4. This clips examines how vaccines are made and how they are able to produce immunity to infectious diseases.

Gaza's health ministry has announced that the Indonesian hospital no longer has a fully functional generator.

Vice President, North America Baby Care for Proctor & Gamble, Jodi Allen on UNICEF's success in eradicating tetanus deaths at the Salma Hayek and UNICEF Announce 2nd Wave of 'One Pack = One Vaccine' Campaign at New York NY. (Footage by...

February 1, 2003

1. Mural showing female doctor vaccinating a w
omen
2. Wide pan interior conference room in Ministry
of Health
3. Mid sh
ot afghan women
4. C
lose up woman's face
5....

January 30, 2010

1. Pan of interior of temporary field hos
pital
2. Mid of mother with child insid
e hospital
3. Various of children lying on beds i
nside hospital
4. SOUNDBITE (English)...

Jun.15 -- Dr. Amesh Adalja, Johns Hopkins Center for Health Security senior scholar, discusses the U.S. goal of vaccinating 70% of the population, where vaccinations should be made mandatory, and concerns in the U.S. and U.K. about the...

1. Tilt down to medical staff attending to Betina Joseph, a five-year-old girl with tetanus about to be airlifted to Philadelphia

2. Close-up of Betina''s
face
3. Close of face of young...

HEADLINE:Haitian child quake victims flown to U.S. for care

CAPTION: Doctors skirted a bureaucratic logjam to save the life of 3 critically ill child victims of Haiti''s earthquake on Sunday,...

1. Pan of interior of temporary field hospital

2. Mid of mother with child inside hos
pital
3. Various of children lying on beds inside
hospital
4. SOUNDBITE (English)...

1. Various shots of children being vaccinated

2. Close up little boy crying after inje
ction
3. Childre
n watching
4. SOUNDBITE (English) Doctor David Hipgrave, Chief Health O
fficer, UNICEF:
"Particularly...