Absent vaccines and pharmaceutical interventions, the only tool available to mitigate its demographic effects is some measure of physical distancing, to reduce contagion by breaking social and economic contacts. Policy makers must balance the positive health effects of strong distancing measures, such as lockdowns, against their economic costs, especially the burdens imposed on low income and food insecure households. The distancing measures deployed by South Africa impose large economic costs and have negative implications for the factor distribution of income. Labor with low education levels are much more strongly affected than labor with secondary or tertiary education. As a result, households with low levels of educational attainment and high dependence on labor income would experience an enormous real income shock that would clearly jeopardize the food security of these households. However, in South Africa, total incomes for low income households are significantly insulated by government transfer payments. From public health, income distribution and food security perspectives, the remarkably rapid and severe shocks imposed because of Covid-19 illustrate the value of having in place transfer policies that support vulnerable households in the event of ‘black swan’ type shocks.

Knowledge of how South Korean firms choose their capital structures has particular value due to the country's specific corporate structure and the role of leverage in the evolution of its financial crisis of 1997 and recovery. Using a large panel for the years 1992-2001, we investigate the evolution and determinants of Korean firms' capital structure and focus on differences between firms in different quantiles of the debt-capital distribution. Conditional quantile regressions show that while variables associated with standard models of asymmetric information costs are significant throughout the distribution, there are considerable differences, including differences in sign, in their impact on firms with different degrees of leverage. Those observed nonlinearities in the determinants of capital structure are consistent with a model of capital structure that includes both costs resulting from asymmetric information and an upper bound on the debt-capital ratio. D

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