Abstract: A novel live vaccine for the prevention of salmonellosis in water fowl comprising essentially a suspension of living culture of the attenuated strain Salmonella typhi-murium No. 3, deposited at the All-Union State Research Control Institute for Veterinary Preparations, the USSR Ministry of Agriculture (No. 121), in a concentration of 2-4 billion microbe cells per 10 cm.sup.3 of drinking water. A process for making said vaccine, wherein the attenuated strain Salmonella typhi-murium No. 3 is cultivated in a culture medium containing sources of carbon, nitrogen, mineral salts, biologically active substances at a temperature of 37.degree.-38.degree. C. to produce the highest attainable accumulation of biomass during a period of 10-14 hours with subsequent drying and obtainment of the vaccine.

Abstract: An acaricidal preparation for diagnosis and control of ectoparasites of bees is proposed including 0.006 to 0.167% by weight of an ester of N-methyl-carbamic acid, acetone being the balance, up to 100% by weight.The acaricidal preparation may also include difluoro dichloromethane and have the following composition, in % by weight:______________________________________ ester of N-methyl-carbamic acid 0.006 to 0.05 acetone 19.994 to 29.95 difluoro dichloromethane 80 to 70. ______________________________________The method of using the proposed acaricidal preparation is as follows: bee colonies are sprayed with the preparation in the form of aerosol at an ambient air temperature of 15.degree. to 30.degree. C., at a rate of 15 to 25 seconds per 50 cubic decimeters, once or up to four times, the interval between each treatment in the latter case being 12 to 24 hours.The proposed acaricidal preparation is a highly effective agent for diagnosis and control of ectoparasites of bees.