Kansas on Monday sued Pfizer Inc., accusing the pharmaceutical giant of misrepresenting the safety of its Covid-19 vaccine and violating the state's consumer protection law. The lawsuit was filed by state Attorney General Kris Kobach in Kansas District Court, Thomas County. The suit alleges the drugmaker misled the public when it said it had a safe and effective Covid-19 vaccine. "Pfizer said its COVID-19 vaccine was safe even though it knew its COVID-19 vaccine was connected to serious adverse events, including myocarditis and pericarditis, failed pregnancies, and deaths," the state wrote in the complaint. The company administered more than 3.5 million vaccine doses in Kansas as of Feb. 7, 2024, according to the lawsuit. The complaint also said Pfizer maintained its own adverse events database, separate from the federal Vaccine Adverse Event Reporting System (VAERS), a national early warning system managed by the Food and Drug Administration and Centers for Disease Control and Prevention to detect possible safety problems in US-licensed vaccines. Pfizer's database contained cases of adverse events reported spontaneously to Pfizer, cases reported by the health authorities, and cases published in the medical literature, according to the suit. "Pfizer's adverse events database contained more adverse event data than VAERS because it included both information in VAERS and information not in VAERS," Kobach wrote.