Thanks, Brian. And I would also like to welcome you to the QuidelOrtho and I look forward to the next chapter in our company's growth story. Let's begin with details of our first quarter results on Slide 4 of the earnings presentation. As a reminder, unless stated otherwise, all year-over-year revenue growth rates on today's call are provided on a comparable constant currency basis. Our first quarter 2024 financial results were in line with our expectations and our underlying business trends remain solid. First quarter 2024 revenue was $711 million reported basis compared to $846 million in the prior year period. The year-over-year revenue decrease is primarily COVID-19 related. Therefore, excluding COVID-19 revenue, our total revenue grew by 6% in constant currency, with solid growth across all regions. And if you also exclude the onetime $21 million third-party collaboration settlement from Q1 last year, total revenue 10% in constant currency. From a regional perspective, in Q1, again, excluding COVID-19 revenue and in constant currency, we achieved revenue growth of 5% in North America, EMEA grew 6%, China growth of 12%, and the rest of the world growth of 6%, which includes Japan, Asia Pacific and Latin America. First quarter 2024 nonrespiratory revenue was flat compared to the prior year period of $574 million. Excluding the onetime third-party collaboration settlement in the prior year period related to our Labs business, nonrespiratory revenues grew 4%. First quarter 2024 respiratory revenue was $137 million, which included approximately $50 million in COVID-19. Respiratory revenue decreased 48% year-over-year, primarily due to lower COVID-19 revenue. Excluding the government-only COVID-19 orders, respiratory revenue grew 6%. And as Mike mentioned, our first quarter respiratory growth was driven by strong Sofia sales in the professional setting. We leveraged our large global Sofia installed base with 70% of Sofia customers purchasing multiple tests. This includes our combo test, which accounted for greater than 50% of our flue testing revenue in Q1 and is consistent with the past several quarters, demonstrating the durability of this product. Moving down the P&L. Non-GAAP total operating expenses were essentially flat compared to the prior year period. Slide 5 shows that Q1 adjusted gross profit margin was 47.5% versus 53.8% in the prior year period. The change was primarily related to lower COVID-19 product sales, which are high-margin contributors as well as onetime items that made for favorable year-over-year comparisons. In summary, gross margin headwinds were comprised of 3 onetime items. 630 basis points related to the large government COVID-19 orders in Q1 of last year, 140 basis points from the onetime third-party collaboration settlement in Q1 last year. And finally, 230 basis points tied to an inventory reserve related to the respiratory product expiration in Q1 of '24. Those 3 others were partially offset by underlying base business performance and cost-saving actions within manufacturing and supply chain, which were approximately 400 basis points of benefit to the margin. Adjusted EBITDA was $132 million compared to $245 million in the prior year period. Adjusted EBITDA margin was 19% compared to 29% in the prior year period. Adjusted diluted EPS was $0.44 compared to $1.80 in the prior year period. The year-over-year change in adjusted EBITDA and adjusted diluted EPS was primarily due to the lower COVID-19 revenue on the government work. Our first quarter effective tax rate was 23.5%, which was consistent with the prior year and in line with our full year expectations. In Q1 2024, we recorded a noncash goodwill impairment charge of $1.7 million for the North America reporting unit due to the decrease in the estimated fair value, which was consistent with the decline in the company's market capitalization during the quarter. Turning now to the balance sheet on Slide 6 of the presentation. We finished the quarter with $79 million of cash and $40 million drawn on our revolver. Note that during the quarter, we liquidated investments to avoid additional revolver borrowings. Recurring free cash flow of negative $13 million was driven by working capital needs. We do expect cash flow to improve in the second half of 2024 as margin restoration intact to take effect along with seasonally higher revenue expected in Q4. We continue to focus on executing our cost savings and margin restoration initiatives, which are designed to deliver improved performance and sustainable long-term growth. We expect the benefits from these initiatives to be realized in the second half of '24 and in the first half of 2025 with minimal impact in Q2 of this year. Taking all this perspective, we intend to maintain operating flexibility as we implement these initiatives. In light of this, and in an effort to be conservative, we did amend our credit agreement in April. To increase the maximum consolidated leverage ratio beginning in Q3 this year through the loan maturity in May of 2027. Importantly, we completed this amendment at a cost of 12.5 bps of the total loan commitment and the loan pricing is unchanged. During the first quarter of 2024, our consolidated leverage ratio was 3x, including pro forma EBITDA adjustments compared to the 4x maximum specified amended credit agreement for the first half of '24. Based on current expectations, we expect our consolidated leverage ratio to be approximately 3.5x by the end of this year, including pro forma EBITDA adjustments compared to the 4.25 maximum specified in the amended credit agreement. Lastly, we want to provide some relevant updates based on our current visibility. Our prior expectation for COVID-19 revenue was approximately $225 million based on our current view, which is subject to change based on COVID-19 developments, we are now expecting approximately $150 million in COVID-19 revenue for the full year 2024. Second, we also expect that Savanna revenue will be immaterial in 2024 with no expected U.S. respiratory revenue contribution from Savanna in the '24, '25 respiratory season. And as a reminder, the COVID-19 Public Health Emergency in the U.S. ended in May of 2023. However, we continue to see significant quick view COVID-19 test sales in the retail setting in the second quarter '23. Hence, we expect year-over-year COVID-19 revenue comparisons to again be challenging in Q2 of this year. And as a result of these changes to the COVID-19 and Savanna revenue, our current expectations are to be at or slightly below the low end of our previously communicated '24 guidance ranges for revenue, adjusted EBITDA and adjusted EPS. With our new President and CEO coming on board this week, we've decided to suspend guidance to give Brian opportunity to assess the business and evaluate our plans for the rest of 2024. We do intend to resume providing guidance later in the year when we are able to share our plans. I would now like to ask the operator to please open the call for questions.