WASHINGTON—U.S. Rep. Kevin Brady (R-Texas), the top Republican on the House of Representatives tax-writing Ways and Means Committee, said on Tuesday that he had tested positive for coronavirus weeks after receiving a first dose of the Pfizer COVID-19 vaccine. Brady, 65, is the second House member to report testing positive for the virus this week. An aide to Rep. Kay Granger (R-Texas), 77, the top Republican on the House Appropriations Committee, announced on Monday that the lawmaker had tested positive. “Tonite, the Office of House Physician informed me that I’ve tested positive for Covid 19 & am quarantined,” Brady said on Twitter on Tuesday. “As recommended, I received a first dose of the Pfizer vaccine Dec 18 & also recently tested negative for Covid on New Years Day. Begin treatment tomorrow. Shld be fine.” A nurse in California tested positive for COVID-19 last month, more than a week after receiving …