Group A1: RT PCR CHIKV positive patients. Group A2: RT PCR CHIKV negative, IgM anti CHIKV positive, IgG anti CHIKV negative patients. Group B: RT PCR CHIKV negative, IgM anti CHIKV negative, IgG anti
Variability of constant of the null model for recent CD-4 T-cells count among HIV infected patients on ART from April, 2015 to January, 2019, Tigray region, Northern Ethiopia.