Letter from Dr Craske, Consultant Virologist, PHLS, to Dr Lane enclosing paper prepared for the MRC Hepatitis Vaccine group describing early information about AIDS in the USA, and a copy of protocol prepared at CDC Atlanta for use in their survey. Provided to assist Dr Lane with possible investigation in suspect patients. Enclosures at CBLA0001653_002 and _003 a) Paper headed Spectrum of Disease Presentation in the Acquired Immune- deficiency Syndrome(AIDS). (b) Dr Craskes Paper headed The Acquired Immune Deficiency Syndrome (AIDS).