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The paper considers views of teachers and international students on effectiveness of language acquisition. The study represents the results of original experiment conducted among international students from the various institutes of Kazan Federal University. Students were requested to determine the priority of the following factors and explain the choice: a role of motivating anxiety for learning foreign language; a role of language abilities and talents of international student; a role of professional and personal characteristics of foreign language teacher; a role of methods, techniques and technologies of teaching; importance of studying within environment of a target language. Views of experts and international students on priority of impact of various factors of the foreign language teaching differed. The only factor where the opinions of teachers and students were the same, turned out to be the role of motivation. However, comparative analysis of factors of effectiveness in studying from the point of view of different and in the same time unified subjects of this process shows that the whole complex of factors must be taken into account. The results of the conducted study inevitably prove the necessity of considering the students’ opinion on the process of teaching, and corresponding correction of teachers’ activities.

Aim: Study the state of collective immunity against poliomyelitis in 7 regions of Russia in the last 3 years., Materials and Methods: 2579 sera were studied for antibodies against poliomyelitis virus. Antibodies (AT) against 3 types of viruses were determined in neutralization reaction in RD cell culture, the state of collective immunity in the examined individuals was evaluated by the percent of individuals with AT against a type of poliovirus and geometric mean AT titer. The circulation of wild polioviruses was judged by the presence of strain specific AT against wild and vaccine viruses in the examined children (311 sera were studied)., Results: The indicators of collective immunity against poliomyelitis in both select examined regions and select age groups were generally high. The data obtained allow to make a conclusion that the quality of vaccine prophylaxis in the examined regions is good. Introduction of wild poliovirus type 1 from Tajikistan in 2010 caused disease in 7 residents of Russia whereas an epidemic that had affected more than 700 individuals emerged in Tajikistan., Conclusion: The studies carried out confirmed the necessity to continue qualitative poliomyelitis vaccine prophylaxis in the country despite the lack of circulation of wild polioviruses that can be introduced at any time.