Plus: Novavax says the FDA rejected its combination Covid-19 and flu vaccine because of a \u201cserious adverse event\u201d in a clinical-trial participant. Elon Musk\u2019s SpaceX sues California regulators for voting down a request to allow more of the company\u2019s rocket launches there. J.R. Whalen reports.\n\n\n\nSign up for the WSJ's free What's News newsletter.\xa0\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices