“The vaccine is useful in the treatment of influenza and ordinary colds, and in any infection in which the Bacillus influenzae is the causative agent.” An advertising pamphlet contained the following: “Catarrh, Acute and Chronic; Colds, Influenza.--The micro-organisms capable of producing catarrhal conditions of the nose and pharynx and most commonly isolated are B. Friedländer, M. catarrhalis, staphylococcus, pneumococcus (in infections beginning in the larynx), _B. influenza_ and streptococcus. These organisms are found normally in the respiratory passages and acquire virulence only when resistance has been lowered through overwork, exposure to cold, etc. “The results following the use of Catarrhal Vaccine Combined (in the non-epidemic forms) and influenza Mixed Vaccine (in the epidemic types) have been very satisfactory, due to the great vascularity of the tissues. Acute attacks are aborted altogether or shortened in duration and the danger of complications greatly minimized.” No evidence was submitted which warrants the preceding claims nor is the Council aware of any reliable testimony to indicate that the administration of the mixture here discussed is warranted or desirable. On the recommendation of the Committee on Serums and Vaccines the Council voted that “Catarrhal Vaccine Combined-Lilly” and “Influenza Mixed Vaccine-Lilly” be not included in New and Nonofficial Remedies because satisfactory evidence of their value is wanting. Influenza Serobacterin Mixed-Mulford Because of inquiry received, the Council took up the consideration of “Influenza Serobacterin Mixed-Mulford,” and requested the Mulford Company to present evidence to establish the admissibility of the preparation to New and Nonofficial Remedies. The Mulford Company sent specimens of the serobacterin in question, an advertising circular and a letter by the director of its Biologic Laboratories. According to the label on the package, the preparation is made from the following organisms: Bacillus influenzae, Staphylococcus aureus, Staphylococcus albus, Streptococcus, Pneumococcus and Micrococcus catarrhalis (group). This mixture is recommended by the manufacturer: “For the prophylaxis and Treatment of Common Colds, Mixed Infections of the Respiratory Mucous Membranes, Acute and Chronic Catarrhal Conditions of the Nose, Throat and Respiratory Passages.” No evidence is submitted for this recommendation except that in “colds and bronchitis and the other common infections of the upper respiratory passages ... five or six bacteria are very commonly present--two or more of them are nearly always present ...” and the letter by the director of the Mulford Biologic Laboratories expressing the belief that in his own case the use of the mixed vaccine has aborted or prevented colds. As regards the use of this complex biologic preparation: