A Study to Learn About Medicine Called Ritlecitinib in Children Aged Between 6 to 12 Years With Severe Alopecia Areata

A Study to Learn About How a New Pneumococcal Vaccine Works in Adults

EPIC-Peds: A Study to Learn About the Study Medicine Called PF-07321332 (Nirmatrelvir)/Ritonavir in Patients Under 18 Years of Age With COVID-19 That Are Not Hospitalized But Are at Risk for Severe Disease

A Study to Understand How the Study Medicine (PF-06823859) Works in People With Active Idiopathic Inflammatory Myopathies [Dermatomyositis (DM) and Polymyositis (PM)]

A Study To Learn About Two Study Medicines (PF-07275315 And PF-07264660) In People Who Have Moderate To Severe Atopic Dermatitis

A Study to Learn About the Study Medicine Called PF-07868489 in Healthy Adult People and in People With Pulmonary Arterial Hypertension

A Study to Learn About the Study Medicine Called PF-07275315 in People With Moderate-To-Severe Asthma

A Study to Learn About the Study Medicine Called Rimegepant in Women When Used for Intermittent Prevention of Menstrual Migraine

A Study to Learn About the Study Medicine Elranatamab Alone and With Daratumumab in People With Multiple Myeloma Who Have Received Other Treatments

A Study to Learn How Different Forms of the Study Medicine Called PF 08049820 Are Taken up Into the Bloodstream in Healthy Adults