HOW DOES A VACCINE WORK? - Jamy's Essentials

Vaccines are one of the most important and effective inventions in the history of medicine. How do vaccines work? Jamy explains everything! #Puberty #Sexuality #Education #Lumni Many rumors are circulating about vaccines... Learn more with La Fabrique du mensonge 👉 https://cutt.ly/Wviu4Ee Find all of "Jamy's Essentials" here 👉 https://cutt.ly/5vuc1eM Subscribe to Lumni 👉 http://bit.ly/2QLeh5V Since January 1, 2018, the list of mandatory vaccines has expanded from 3 to 11 for all children under 2 years old. Previously, vaccination against diphtheria, tetanus, and polio was mandatory. From now on, all children under the age of 2 must also be vaccinated against whooping cough, hepatitis B, measles, mumps, rubella, Haemophilus influenzae, pneumococcus, and meningococcus C. How does a vaccine work? It acts on our immune system: our defense system against microbial attacks. "Microbes" is a word we use to simplify things. In fact, we're talking about microscopic elements, invisible to the naked eye, that can be very different, such as certain bacteria or viruses. I say "some" because they're not all bad for us. On the contrary, some even help our bodies function. But others, like the pneumococcus bacteria or the measles virus, can make us very sick! The little soldiers of our immune system are white blood cells. These are cells produced by the bone marrow that fight microbes. Among these white blood cells are B lymphocytes. Their mission is to produce antibodies specific to each intruder. They patrol our body, recognizing and identifying the intruder to allow the immune system to eliminate it. The most interesting thing about all this is that our immune system has a memory. Once it has learned to recognize a microbe, it knows how to react to the next intrusion. This is what we call "acquired" or "adaptive" immunity. Our immune system evolves and learns based on each new microbe attack. The problem is, it takes a few days for it to learn how to defend itself. And during this time, illness can occur. And in the case of a serious illness, it can be serious, even very serious. That's the whole point of vaccination! Vaccines contain the bacteria, viruses, or toxins responsible for the diseases against which our immune system must learn to defend itself. But don't panic! In the vaccine, the microbe is killed or deactivated. Sometimes, the vaccine contains only a small portion of the microbe. Not enough to make us sick. However, it's enough for the immune system to learn to recognize them and defend itself. To make sure our bodies don't forget, sometimes a little booster shot is needed. Hence, booster vaccinations are given 5 or 10 years after the first injection, for example. This prevents us from getting sick and also prevents contagion! According to the WHO, the World Health Organization, vaccination prevents between 2 and 3 million deaths per year worldwide. That's huge! Follow Lumni on: Facebook ▶   / lumnifr​   Twitter ▶   / lumnifr​   Instagram ▶   / lumnifr​   Lumni.fr ▶ https://www.lumni.fr​