This study aims to analyze the correlation between weather and covid-19 pandemic in Jakarta Indonesia. This study employed a secondary data analysis of surveillance data of covid-19 from the Ministry of Health of the Republic of Indonesia and weather from the Meteorological Department of the Republic of Indonesia. The components of weather include minimum temperature (°C), maximum temperature (°C), temperature average (°C), humidity (%), and amount of rainfall (mm). Spearman-rank correlation test was used for data analysis. Among the components of the weather, only temperature average (°C) was significantly correlated with covid-19 pandemic (r = 0.392; p b .01). The finding serves as an input to reduce the incidence rate of covid-19 in Indonesia.

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Chitosan was modified by maleic anhydride, and it was then functionalized using heterogeneous and blending method to obtain the membrane.

Diptheria is commonly caused by the aerobic gram-positive bacteria, corynebacterium diphtheria . We herein report an unusual case of diphtheria outbreak in Indonesia in 2017 and its possible causes and current management.