High genetic diversity of measles virus, World Health Organization European region, 2005-2006

During 2005-2006, nine measles virus (MV) genotypes were identified throughout the World Health Organization European Region. All major epidemics were associated with genotypes D4, D6, and B3. Other genotypes (B2, D5, D8, D9, G2, and H1) were only found in limited numbers of cases after importation from other continents. The genetic diversity of endemic D6 strains was low; genotypes C2 and D7, circulating in Europe until recent years, were no longer identified. The transmission chains of several indigenous MV strains may thus have been interrupted by enhanced vaccination. However, multiple importations from Africa and Asia and virus introduction into highly mobile and unvaccinated communities caused a massive spread of D4 and B3 strains throughout much of the region. Thus, despite the reduction of endemic MV circulation, importation of MV from other continents caused prolonged circulation and large outbreaks after their introduction into unvaccinated and highly mobile communities

Research Note--The Impact of Information Technology Investments and Diversification Strategies on Firm Performance

As companies continue to make large investments in information technology (IT), questions about how and in what contexts such investments pay off have gained importance. We develop a theoretical framework to explain how IT investments could pay off in the economically significant context of corporate diversification, and empirically find that the performance pay off to IT investments is greater for firms with greater levels of diversification. We also find that the performance payoff to IT investments is greater in related diversification than in unrelated diversification.information technology investments, business strategy, corporate diversification