Dr. Carole Keim MD takes listeners through vaccines in today’s episode. She explains everything from how vaccines are created to common myths and misconceptions about them. She then details each baby and childhood vaccine, and what disease each prevents.Dr. Keim breaks down how vaccines work and what criteria they must meet in disease to be effective. She explains the four main types of vaccines and lays each vaccination out in a clear manner, covering what age your baby or child will be when they receive the vaccine and how the immune response works. These vaccines are proven to protect your baby against everything from tetanus to mumps to pertussis and more.This episode will cover: How vaccines workCriteria to create a vaccineThe 4 different types of vaccinesCommon myths or misconceptions about vaccinesSpecific vaccines (all routine childhood vaccines)Total number of vaccinesCommon side effects and red flags, how to treat How vaccines work: 00:44The purpose of vaccines is to trigger an immune response faster and with less harm than the original disease.The immune system is a lot like a microscopic team of superheroes, made up of white blood cells, antibodies, the complement system, and a few others.  These superheroes fight villains such as bacteria, viruses, and other pathogens.  If they cannot fight them fast enough, the villains will multiply and cause symptoms of disease.  Vaccines give your superhero team information about what the villains look like, so they can recognize them as soon as they enter the body, and fight them off quicker and easier.Vaccine criteria: 01:26In order to make a vaccine, certain conditions must be metIt has to be effective.  We must be able to become immune to the pathogen; diseases like RSV and HFM are ones we can catch multiple times.  Chickenpox is one that you become immune to after catching it once.The pathogen must not be able to mutate faster than the vaccine can be given - we do flu boosters annually because the flu virus mutates about that often.  HIV and common cold mutate too fast for a vaccine to be developed.The vaccine must be cost-effective; it has to be cheaper to prevent the disease than to treat itThere are 4 main types of vaccines: 02:31Inactivated (killed pathogens)Live attenuated (weakened pathogens)Toxoid (a piece of what’s inside the pathogen)mRNA vaccines Inactivated vaccines 03:44Most common typeThe bacteria or viruses in the vaccine are killed, so your immune system can safely learn to recognize the pathogen that it is trying to fight off.  These vaccines do not have the potential to cause actual disease.  What they do is cause the immune system superheroes to practice fighting the villains, kind of like practicing on dummies, which may cause mild signs of illness - fever, sore muscles, crankiness, or other symptoms.  Examples: IPV (polio), HPV (human papillomavirus), HiB (Haemophilus influenzae B), pneumococcus (Streptococcus pneumoniae), meningococcus (Neisseria meningitidis), and Hepatitis A and B vaccines.Live attenuated vaccines 04:02Made from bacteria or viruses that have been exposed to chemicals that make them weaker than the natural or “wild type” bacteria or virus.  Since these pathogens are not killed completely, your superheroes aren’t just practicing on dummies, they are actually fighting the weakened villains.  So it is possible to have symptoms of the disease, but milder.  Some people with weakened immune systems may not be able to fight them off, and can get the actual disease.  People taking steroid medications or immune suppressants, or who have HIV or other immune deficiencies should consult a doctor about whether it is safe to receive these vaccines.  Examples: oral polio vaccine, MMR (measles, mumps, and rubella), Varicella zoster (chickenpox), and rotavirus vaccines.Toxoid vaccines 04:55Made from just part of the pathogen, and protect against the kinds of bacteria that cause symptoms after the toxins inside them are released.  These toxin-carrying bacteria are like villains carrying around a bottle of poison, and the toxoid vaccine gives the superheroes the poison to sample and build up resistance to it.  Example: DTaP (diphtheria, tetanus, and acellular pertussis).MRNA vaccines 05:23Newest typemRNA is like a copy of instructions. These give your immune system something like a sewing pattern to print out and make the dummies for your body to fightExample: some COVID vaccinesMyths and misconceptions about vaccines: 05:45Many parents have concerns about vaccinating their children.  It only takes one serious reaction to call into question the safety of vaccines.  And it has been so long since the vaccine-preventable diseases have run rampant that we in the United States don’t fully understand the scope of what is being prevented.  Here are some of the top concerns that I have heard from parents, and the truth behind them.Aluminum.  There is aluminum in vaccines, but the amount is far less than babies get from other sources.  The total amount of aluminum that babies get from vaccines in the first 6 months is 4.4mg.  Breastfed babies consume 7mg, formula-fed babies consume 38mg, and babies on soy formula consume 114mg of aluminum in the first 6 months of life.  Consuming aluminum vs. having it injected in a vaccine looks the same to the body, so the tiny amount of aluminum in vaccines will not harm your babyAntigens.  An antigen is any microscopic substance that has the possibility to elicit an immune response.  Babies are exposed to over a trillion antigens in the first year that naturally occur in the environment.  The entire vaccine series that children receive today contains just over 150 antigens.  A young baby’s immune system can easily recognize these few antigens and make antibodies to the diseases without getting sick.Autism.  It has been proven that vaccines do NOT cause autism.  The age that children first start showing signs and can be tested for autism is 15-24 months.  This is the same age that children receive booster vaccines, so it is understandable that some parents think they are related. Long-term protection.  Vaccines will protect a person for just as long as if they got the original disease.  So a person who had chickenpox as a child is just as protected from getting it again as a person who has received the chickenpox vaccine.  Some people do not seroconvert (develop antibodies to that disease) - that depends on their immune system and is not a failure of the vaccine itself.Mercury.  There used to be a preservative called thimerosal in vaccines.  That preservative (which contains mercury) has been removed from all vaccines in the US that children receive.  The only vaccine that still contains thimerosal is the adult flu vaccine.Unnatural exposure.  Some people worry that getting exposed to a disease through an injection is not the same as getting it “naturally” by being exposed to a sick person.  This is not true; any disease will get into your bloodstream, which is where it is recognized by the body, and once in there the body has no idea how it got in.  So getting an injection looks exactly the same to your immune system as getting the disease from a sick person.Doctors DO NOT get paid to vaccinate childrenVaccines are NOT a punishment for children who are behaving badlySpecific vaccines: 10:47Hep B - 0, 2, 6 mos.  Hepatitis B is a viral infection that can be passed from mom to baby through the placenta or during delivery.  90% of babies born with HepB will develop chronic infection and are at risk of liver cancer later in life.DTaP - 2, 4, 6, 15 mos, 4 years.  Tdap - age 11, every 10 years.  DTaP has more diphtheria, Tdap has more tetanus. Bacterial infections.  Diphtheria causes severe sore throat and enlarged tonsils, and can block the airway from swelling/tonsils being so enlarged.  Tetanus makes spores that live in soil; any penetrating wound could have tetanus in it (nail/thumbtack, dog or cat bite) and tetanus is not killed by antibiotics so it must be prevented.  Pertussis is whooping cough and causes babies less than a year old to stop breathing.  Everyone who takes care of the baby should be current on their TDaP (within 10 years).  Polio - 2, 4, 6 mos, 4 years.  Polio is a virus that attacks nerves and causes paralysis.  Sometimes it’s minor, and sometimes it’s the diaphragm that’s affected and they stop  breathing.  There is no specific treatment for polio.HiB - 2, 4, 6, 12-18 mos.  HiB (haemophilus influenzae B) bacterial infection that affects children less than 5 years, and especially those under 1 year of age.  It used to cause severe infections like epiglottitis, sepsis, pneumonia, and meningitis.  PCV - 2, 4, 6, 12-18 mos.  PCV = pneumococcal conjugate vaccine, pneumococcus is another name for streptococcus pneumonia, which is a kind of strep that gets into the bloodstream and causes sepsis, pneumonia, and meningitis.  PCV has 13 strains of strep in it right now.Rotavirus - 2, 4, 6 mos. Viral infection that causes severe diarrhea and dehydration in babies. Hep A - 12 and 18 mos. Hep A is a type of food poisoning, there’s no specific treatment.  MMR - 1 and 4 years.  Measles causes high fever, rash, and can cause brain damage, hearing loss, and death.  Mumps causes parotitis (infection of salivary glands), but in boys also causes orchitis (inflammation of testicles) and can lead to sterility.  Rubella is a fever and rash; more dangerous to unborn babies, causes miscarriages and birth defects.VZV - 1 and 4 years.  Varicella Zoster virus (chickenpox) causes cold symptoms, fever, and an itchy and painful rash in children, and shingles in adults.  VZV in pregnancy causes miscarriages and birth defects.MCV - 11 and 16 years.  Meningitis A, C, W, Y are viruses that cause inflammation around the brain that develops quickly and can be fatal.  HPV - 11 years.  Human papilloma virus causes warts and dysplasia and can lead to cancer of the mouth, throat, anus, cervix, and penis.  Currently 9 strains of HPV in the vaccine.  Flu: recommended annually COVID: recommendations are still evolvingVaccines that are available but not given routinely: MenB, PPSV23, Dengue, Typhoid, japanese encephalitis, yellow fever, rabiesTotal numbers of vaccines: 22:351 at birth (Hep B)2 mos: DTaP, polio, HiB, Hep B, PCV, rotavirus - 1 or 2 combo vaccines, PCV and rota = 2 or 3 shots plus an oral vaccine4 mos: DTaP, polio, HiB, PCV, rotavirus - 1 combo plus PCV and rota = 2 shots and one oral6 mos: DTaP, polio, HiB, Hep B, PCV, rotavirus - 1 or 2 combo vaccines, PCV and rota = 2 or 3 shots plus an oral vaccine6+ mos: flu vaccine annually12-18 mos: 2 doses Hep A, 1 of DTaP, HiB, PCV, MMR, VZV.  5-7 shots depending on combos.4-6 years: DTaP, polio, MMR, VZV, typically given as 2 combo vaccines11 years: Tdap, MCV, 2 doses HPV16 years: MCV21+ years: Tdap every 10 years; booster if you have a wound and it’s been less than 5 years, booster while pregnant9 shots and 3 oral before 1 year of age, 5-7 shots from age 1-2, 2 shots age 4-6, 4 at age 11, 1 at age 16 = 21-23 total shots before adulthood.  18 flu shots.  Common vaccine reactions: 23:53Birth: nothing; sometimes redness/swelling2-6 mos: redness and swelling (local reaction), can be as much as the entire thigh and still be considered normal.  Low grade fevers.12-18 mos and 4-6 years: muscle soreness, MMR and VZV cause fevers, VZV sometimes causes rash, other vaccines can cause local reactions11yrs: muscle soreness, local reaction with Tdap and MCV, fainting with HPV16 yrs: local reaction from MCVTdap boosters: muscle sorenessFlu, COVID: flu-like symptomsIt is NOT normal to have a body rash or vomiting after vaccines; those are signs of allergyLarge local reactions and muscle soreness can be treated with cool compresses (wet washcloth) and/or acetaminophen or ibuprofen.  Fever or flu-like symptoms: acetaminophen or ibuprofenI DON’T recommend pre-medicating your child before vaccinesIf your child has an adverse reaction to a vaccine, you should report it to VAERS (vaccine adverse event reporting system).  Remember that VAERS is like Yelp for vaccines, so take that about as seriously as you would a Yelp review.All of this information is also in The Baby Manual book, which is available for purchase. Remember it is always okay to call your doctor or emergency services if you have concerns about your baby’s health.  Resources discussed in this episode:The Baby Manual - Available on AmazonVAERS--Dr. Carole Keim MD: linktree | tiktok | instagram
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