Exhibit 99.1 May 8, 2024 QuidelOrtho Reports First Quarter 2024 Financial Results - Global year-over-year revenue growth of 5% as reported and 6% in constant currency, excluding COVID-19 revenue - - Cost reduction initiatives well underway, headcount reductions expected to deliver approximately $100 million in annualized savings - - Company suspends 2024 financial guidance while it assesses business under new President and Chief Executive Officer - First Quarter 2024 Results and Recent Highlights • Revenue ...