![]() Adenovirus vaccines like J&J’s Covid vaccine cannot replicate in cells and are cleared from tissues following injection. ACOG recommends vaccination of all people who may consider future pregnancy. The internet is full of disproven and nonscientific based claims that Covid vaccines cause infertility. What if you are currently trying to get pregnant or will be trying soon? There is no need to avoid initiation of nursing, discontinue breastfeeding, or pump and dump if you receive a vaccine. Theoretical risks do not outweigh the potential benefits. The ABM (Academy of Breastfeeding Medicine) and ACOG (the American College of OBGYN) both support Covid-19 vaccination in breastfeeding moms. Antibodies are also passed through the breast milk, continuing protection. The mother forms the antibodies, that are then passed to the fetus through the placenta. Maternal vaccination during pregnancy can help protect a newborn from potentially deadly infections. There are no cases of anaphylaxis in the Johnson & Johnson Covid vaccine study. Remember, having side effects of the vaccine does NOT mean you have a Covid-19 infection, but rather your body is responding appropriately to a vaccine. Instead, pregnant patients may take it if they notice fever after vaccination. The CDC does not recommend taking fever-lowering medication (acetaminophen) prior to receiving the injection. Only 9% of those vaccinated reported a fever over 100.4 or higher. Side effects from the vaccine include injection site reactions, fatigue, chills, muscle aches, joint pain, headache, and fever have been reported as mild and transient (first 1-2 days) after the vaccine. What are the side effects of the J&J vaccine? Use of adenovirus vectors has been used and studied in pregnancy for diseases such as ebola, HIV ,and RSV without any adverse pregnancy outcomes noted.Īfter 28 days post a single dose of this vaccine, it is 72% effective in preventing moderate to severe disease, 85% effective in preventing severe disease, and 100% effective in preventing hospitalization or death. Your body then has this spike protein on the cell surfaces which leads to an immune response by mimicking an infection by the coronavirus. ![]() Thus it is cleared from the human cells quickly after it tells them to make the coronavirus spike protein. This adenovirus is not a live virus, does not contain preservatives and does not replicate in cells. The J&J vaccine is a single dose vaccine (a big differentiator from the other two) and uses another type of virus, called adenovirus, to carry the gene for the coronavirus spike protein into tissue cells. How does the Johnson & Johnson vaccine work? Let’s answer the important questions about this vaccine, as it is a different type of vaccine than Pfizer and Moderna. ![]() Recently, the Janssen Biotech vaccine (what we will call Johnson & Johnson or J&J) has been approved for emergency use by the FDA. This is excellent news for pregnant women who have or will receive the Pfizer or Moderna vaccines. There has been no concerning pregnancy outcomes, pregnancy complications, or neonatal outcomes over the baseline population. Since the last blogs, over 30,000 pregnant women have self entered into the CDC’s v-safe program, which tracks outcomes including miscarriage, stillbirth, pregnancy complications, ICU admissions, birth complication, NICU admission, birth defects, neonatal death, and infant hospitalizations. For those that have not read my first blog postings on the Covid Vaccine in pregnancy and breastfeeding, I suggest you start there and then return to this one for updates.
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