Articles by Author: Usman Ali

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  1. A sero-survey to identify the window of vulnerability to measles in infants in north-eastern Nigeria

    A sero-survey to identify the window of vulnerability to measles in infants in north-eastern Nigeria

    Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection
    As infants lose maternal measles antibodies (MMAs), they experience periods when their antibody levels are insuffcient to protect them against measles. A prospective study was carried out at the University of Maiduguri Teaching Hospital. Sera collected from neonates at birth,...
  2. Foreign direct investment flows and domestic investment in China: A multivariate time series analysis

    Foreign direct investment flows and domestic investment in China: A multivariate time series analysis

    Item type: Journal Article • Journal: Investment Analysts Journal
    This paper explores the effects of inward and outward foreign direct investment (FDI) on domestic investment in China using annual time series data over the period of 1982–2016. The empirical analysis is performed using ARDL bound testing procedure and fully...