The Biostatistical Technique to Diagnose the Extract Effect of the Black Tea (Camellia sinensis L.) on the Staphylococcus aureus Isolated from Conjunctivitis

Abstract

This study aimed to identify of the Biostatistical technique to diagnosis the effect of extract of the black tea (Camellia sinensis L.) on the staphylococcus aureus isolated from conjunctivitis. Out of  90 eye swabs were collected from patients with conjunctivitis, 87 (96.67%) were positive for bacterial pathogens, while 3 (3.45%) were bacteriologically sterile. Staphylococcus aureus 28 (32.18%) had the highest prevalence, followed by Staph. epidermides 23 (26.44%), Klebsiella pneumoniae 19 (21.84%) Streptococcus pneumoniae  4 (4.59%) and Moraxella Catarrhalis 3 (3.45%). Gentamycin (89.28 %) appeared as the most potent antibiotic against Staph. aureus, followed by Erythromycin (64.28%), Chloramphenicol (60.71%), Azithromycin (57.14%), Clarithromycin (57.14%), Amoxicillin (42.85%)  showed moderate sensitivity against Staph. aureus, Tetracycline (17.85%) was resisted by staph. aureus Gentamycin is the favors antibiotic used. the inhibitory effect of watery black tea extract on 28 Staph. aureus in which cooling extract show no effect in all concentrates used while heating watery tea extract show no effect on  concentration (0 and 5)  mg/ml, but gave (4.3, 64.3 and 96.4) % in the concentration (12.5 , 25 , 50) respectively. These result show the inhibitory  effect the heating watery tea extract increase with raised of concentration.