Seventeen human immunodeficiency virus-infected patients who were harboring untreated subclinical visceral leishmaniasis (VL) were prospectively followed up. None of the 11 patients who received highly active antiretroviral therapy (HAART) presented with symptomatic VL during follow-up, whereas 2 out of 6 patients who received therapy other than HAART had an episode of overt kala-azar. These fi...

Leishmaniasis, a vector-borne disease that is caused by obligate intra-macrophage protozoa, is endemic in large areas of the tropics, subtropics and Mediterranean basin. This disease is characterized by both diversity and complexity [1], it is caused by more than 20 leishmanial species and is transmitted to humans by about 30 different species of phlebotomine sandflies [2]. Leishmaniasis consis...

In this paper, we consider the generalized min-sum set cover problem, introduced by Azar, Gamzu, and Yin [1]. Bansal, Gupta, and Krishnaswamy [2] give a 485approximation algorithm for the problem. We are able to alter their algorithm and analysis to obtain a 28-approximation algorithm, improving the performance guarantee by an order of magnitude. We use concepts from α-point scheduling to obtai...