They announced that they were starting a hep A trial in the last CC.
The new Lambda trial is for hepatitis B (not hepatitis A).
As to sales, you think they wouldn't have 286 million in sales?
That’s not what the $286M figure means. For ZGEN to have earned the full $286M in sales-based milestones, annual Lambda sales would have to exceed an undisclosed threshold, which was probably about $1B and was certainly at least $500M.