What are you talking about? It's right there in the Forbes article. Did you bother to read it?
> "Well, theory is one thing. Concrete scientific evidence is another. The FDA announcement did mention studies that compared the use of bivalent boosters and monovalent boosters that included approximately 600 and 800 individuals 18 years of age and older for the Moderna ones and 600 participants greater than 55 years of age for the Pfizer-BioNTech ones. These studies reportedly found those who gotten the bivalent boosters had “better” immune response than those who had of those who had received the monovalent boosters. The studies also didn’t show any significant safety concerns with the bivalent boosters, mentioning the usual side effect stuff like pain, redness and swelling at the injection site, fatigue, headache, muscle pain, joint pain, chills, swelling of the lymph nodes in the same arm of the injection, nausea, vomiting, and fever."
Or maybe I wasn't clear in what I said. They have tested bivalent vaccines. Just not for the specific strain of COVID mentioned. I'm saying that seems fine to me since that's what they do for flu, but I'm not an expert. Maybe COVID is different in some fundamental way that means we need to retest for every strain.
> "Well, theory is one thing. Concrete scientific evidence is another. The FDA announcement did mention studies that compared the use of bivalent boosters and monovalent boosters that included approximately 600 and 800 individuals 18 years of age and older for the Moderna ones and 600 participants greater than 55 years of age for the Pfizer-BioNTech ones. These studies reportedly found those who gotten the bivalent boosters had “better” immune response than those who had of those who had received the monovalent boosters. The studies also didn’t show any significant safety concerns with the bivalent boosters, mentioning the usual side effect stuff like pain, redness and swelling at the injection site, fatigue, headache, muscle pain, joint pain, chills, swelling of the lymph nodes in the same arm of the injection, nausea, vomiting, and fever."
Or maybe I wasn't clear in what I said. They have tested bivalent vaccines. Just not for the specific strain of COVID mentioned. I'm saying that seems fine to me since that's what they do for flu, but I'm not an expert. Maybe COVID is different in some fundamental way that means we need to retest for every strain.