Thank you, Rob. It's wonderful to be in a position to report another quarter of strong financial performance. I'll walk through the key financial highlights and then review our full year 2022 guidance and provide a few closing thoughts. Please note that all financial comparisons are versus the prior year period, unless otherwise noted. And also please refer additionally to our press release and 10-Q for detailed financial information. Starting with revenue. We delivered total revenue of $114 million for the first quarter of 2022, up 37% year-over-year. HEPLISAV-B generated net sales of $21 million, up 151%, which as others have mentioned, is a positive trajectory that we are very pleased with. Additionally, we achieved $92 million in CpG 1018 adjuvant revenues, up 23% from $75 million in the same period last year, driven by continued strong execution on our global portfolio of commercial supply agreements. Now turning to expenses. Our research and development expenses for the first quarter of 2022 were $11 million, reflecting continued advancement of our ongoing pipeline programs in Tdap and shingles and our fully funded Phase II contract with the DOD for adjuvanted plague vaccines. Looking ahead, we continue to be very pleased with the progress we're making in our clinical pipeline and look forward to multiple potential data catalysts by the end of the year. Selling, general and administrative expenses for the first quarter of 2022 increased to $32 million compared to $22 million for the first quarter of last year, primarily driven by increased personnel-related expenses, including stock-based compensation, coupled with focused marketing investments to drive growth in HEPLISAV-B and support our global operations. Moving on to profitability. For the first quarter of 2022, we generated GAAP net income of $33 million or $0.26 per share basic and $0.22 per share diluted compared to GAAP net income of $900,000 or $0.01 per share basic and diluted for the first quarter of 2021. I'd like to take a moment to point out 2 unique items impacting our profitability. First, we utilized approximately $33 million in net operating losses to reduce our 2022 Q1 taxable income; and second, our GAAP net income includes an approximately $2 million gain, reflecting the final noncash fair value adjustment for our previously outstanding warrant liability. Looking ahead, we do not expect to record any further quarterly noncash fair value adjustments as all warrants have either been exercised or expired as of the end of Q1 2022. Now for a few quick remarks on cash. We ended the first quarter with a very robust balance sheet, including cash, cash equivalents and investments of $503 million, and we continue to believe that we have sufficient capital to support our core business without the need to raise additional funds, which is especially important in this challenging market backdrop. Lastly, we're very pleased to reaffirm our previous 2022 full year financial guidance, which includes CpG 1018 adjuvant revenue of at least $550 million with approximately 50% gross margin for the year; SG&A expenses in the range of $120 million to $140 million; R&D expenses in the range of $55 million to $70 million; and interest expense of approximately $7 million. Delivering shareholder value is at the heart of successfully executing on our strategic priorities. We demonstrated strong execution on our core business objectives during the first quarter and believe that continued execution on these priorities will drive value creation over time. Thank you, everyone, for your attention today. Operator, we would now like to open the Q&A portion of today's call.