Agglutination by using polyvalent salmonella antisera. Antibiotic sensitivity test was carried out by using standard methods. Salmonellosis continues to be a serious public health hazard in India. Due to the development of multiple drug resistance and atypical presentation especially in paediatric patients, typhoid fever is becoming increasingly difficult to diagnose. Hence blood culture studies are very useful in such cases.
Brain abscess is caused by bacteria, fungi or parasites.
The commonest microorganisms causing brain abscess include Staphylococcus aureus, Enterobacteriacae, Streptococci, mycobacteria, bacteroides, nocardia and some of the protozoan parasites like Toxoplasma gondii and Entamoeba histolytica. Several fungi like aspergillus, candida, Cryptococcus neoformans, Pseudoallescheria boydii, etc. are also responsible in causing brain abscess. In April 1999, he was admitted in Bombay Hospital for headache and convulsions of few days duration. An aspirate from this lesion, sent in the month of April, revealed a fungal aetiology of the lesion. A second sample from the brain abscess was sent on 2nd June and this sample confirmed the earlier findings.