This episode's headline: AIDS Medicine; AIDS in Zaire; Critic's Day; Tackling the Books; Fatal Attraction. The guests include In Washington: Dr. FRANK YOUNG, Food and Drug Administration; In New York: Dr. JONATHAN MANN, World Health Organization; REPORTS FROM NEWSHOUR CORRESPONDENTS: Dr. JULIAN MANYON, Thames Television; KWAME HOLMAN; PENNY STALLINGS. Byline: In New York: JIM LEHRER, Associate Editor; In Washington: JUDY WOODRUFF, Chief Washington Correspondent