Abstract:
This study was aimed to isolate and identify the causative agent of
lower respiratory tract Infection in addition to frequency of pulmonary
tuberculosis among suspected individuals.
A total of one hundred and sixty patients with symptoms of lower
respiratory tract infection attending to Abu-Anga Hospital and Hospital
of Tropical Diseases were enrolled in this study. This study was carried
out during the period from October 2008 to March 2009. Selection of all
patients depends mainly on clinical symptoms and consulted chest X-ray.
Sputum specimens were taken from patient. And the age of the enrolled
patients varies from 13 to 83 year.
About 102 (63.8 %) were male, while 58 (36.3%) were female., the
result of Z.N stain reveled 50 (31.3%) specimens was found to be
positive, while the remaining specimens 110(68.8%) showed negative
result, concerning other causative agents of lower respiratory tract
infection colonial morphology on(blood ,chocolate and MacConkey’s
Agar) , Gram's stain and biochemical tests were used. The results
obviously showed that secondary invaders to tuberculosis were found in
(31.3 %) were found as fellows Streptococcus pneumoniae (26.0%),
Streptococcus pyogenes (26.0%), Streptococcus pyogenes and aerobic
Actinomycetes
(26.0%)
as
co-infection,
unidentified
(12.0%),
Staphylococcus aureus (4.0%), Haemophilus Influenzae (2.0%) and
aerobic Actinomycetes (12.0%). Regarding the non tuberculosis patients
110(68.8%) the result clearly showed Streptococcus pneumoniae
(43.6%), Streptococcus pyogenes (10.0%), Streptococcus pyogenes and
aerobic Actinomycetes (15.5%) as co-infection, unidentified (14.5 %),
Staphylococcus aureus (4.5%), Haemophilus Influenzae (0.9%) and
aerobic Actinomycetes (8.1%), Klebsiella Pneumoniae (0.9%) and no
growth (1.8%).
According to this finding S. pneumoniae found to be the most common
isolate in both tuberculosis patients 26.0% and non tuberculosis patients
43.6%.
