Tecovirimat for Treatment of Monkeypox Virus - Study Extension Providing Standard of Care Only

"Tecovirimat Oral Capsule 200 mg capsules~Number of capsules and frequency of dosage will be based on participant weight:~* ≥120 kg: three capsules three times a day (total daily tecovirimat dose: 1,800 mg)~* 40 to \<120 kg: three capsules twice a day (total daily tecovirimat dose: 1,200 mg)~* 25 to \<40 kg: two capsules twice a day (total daily tecovirimat dose: 800 mg)~* 13 to \<25 kg: one capsule twice a day (total daily tecovirimat dose: 400 mg)~* 6 to \<13 kg: ½ the contents of a capsule twice daily (total daily tecovirimat dose: 200 mg)~* 3 to \<6 kg: ¼ the contents of a capsule twice daily (total daily tecovirimat dose: 100 mg)"

Participants are provided SOC for mpox