Effects of peri-mortem infection on the entomofauna of decomposing buried human remains - a metadata analysis.

The role of infectious disease as a cause of death is undeniable. The affect infectious disease may have on decomposition after death is less well established. Furthermore, virtually no information is available regarding the effects of burial conditions in such circumstances, despite that numerous clandestine burials occur each year. Although many aspects of post-mortem pathology are well understood and provide frequent insight in medicolegal investigation, where buried bodies are concerned, there is great variation in the decomposition processes, depending on extrinsic and intrinsic conditions. Criminal burials and hurriedly dug clandestine graves are seldom deeper than 120 cm allowing access to certain invertebrates, excluding others that only develop in unburied bodies. Numerous studies have reported on such clandestine graves with a purpose to facilitate forensic investigation, but our knowledge of decomposition in deeper graves lags behind, despite several often-cited papers of over a century ago. The poor level of detail in deep-grave knowledge is in part due to resource deficiencies and ethical considerations, but in part due to lack of thorough investigation of the data in papers of often cited prior work. To this end, a metadata analysis assessed a paper written by Dr. Murray Galt Motter in 1898, providing detail of 150 disinterment events with linked medical records from City of Washington cemeteries. This paper, written more than a hundred years ago, was largely descriptive and the detailed data provided in a summary table were never fully analysed. The paper is often quoted despite these obvious oversights. The present study revisits this work, applying a frequency statistical analysis conducted using categorical data and chi-squared analysis. This new analysis reveals patterns and relationships so long 'locked-up' within the body of the table and provides greater understanding of the effect of infectious disease on the abundance of species in the entomofauna associated with deeply buried remains. The data confirm that the presence of adipocere (saponification) is detrimental to development of soil entomofauna ((X2 = 6·64, df = 1, p < 0·01)). Some species, in particular Proisotoma sepulcralis (Collembola), Eleusis pallida (Coleoptera) and Conicera tibialis (Diptera), were positively influenced by association with infectious disease cases (p < 0·01) while only Piophila casei (Diptera) demonstrated a negative association (p < 0·05). Furthermore, the presence of peri-mortem infectious disease, while not necessarily a cause of death, influences post-mortem colonisation of the buried body by insects. The abundance of some species is enhanced, suggesting that bacterial burdens enhance decomposition in a manner favourable to insect feeding and hence abundance, by releasing compounds that the entomofauna feeds on.

Exhumation - Nuisance to the dead, justified?

OBJECTIVE: Exhumation stands as a very significant feature of forensic investigations. The legal excavation of dead bodies for ascertainment of the cause of death has always aided the law enforcement agencies to comprehend the anonymity of any suspicious case and further convict the criminal in cases of homicides. This study analyses the different aspects of the exhumations which were carried out and were autopsied in Karachi during the study period. METHOD: This was a cross-sectional study, and included all the exhumations carried out in Karachi during a period of 7 years and 7 months from 1 January 2004 to 31 July 2011. RESULTS: A total of 101 exhumations were carried out during the study period. Out of 101 cases, 63 were males (62.4%) and 38 females (37.6%) giving a male to female ratio of about 3:2. Causes of death were ascertained in 75 cases, thus the success rate was 74.3%. Head injury by hitting with hard blunt object was the most frequent cause of deaths (17.8%), followed by asphyxia due to strangulation (15.8%). DISCUSSION: Exhumations must be ordered by the Judiciary in suspicious cases as it aids in determining the actual causes of death and leads to convictions. It also brings a great deal of satisfaction for the relatives of the deceased and halts any doubts in their minds. As shown by our study, much attention is given to the cases in urban areas by the relatives who are determined to find the cause of death even after burial procedures.

[Process of exhumation and identification of victims of the 1992-1995 war in the territory of Bosnia and Herzegovina]. / Proces ekshumacji i identyfikacji ofiar wojny na terenie Bosni i Hercegowiny w latach 1992-1995.

Three and half years of war in Bosnia-Herzegovina in 1992-1995 took lives of thousands of people. About 30,000 of them were accounted for and reported as missing. Fighting and ethnic cleansing took place throughout the country. In consequence bodies of killed persons were buried in endless number of clandestine mass graves, dumped into rivers, wells, septic tanks and caves, or simply left unburied in fields, meadows and forests. Therefore, it is essential to obtain information about the potential grave or graves, which allows their proper location. More than 20,000 victims were exhumed to the end of 2008. Unfortunately, majority of remains recovered from secondary graves represents either incomplete skeletons, not associated bones or bone fragments. In this situation, only a large-scale DNA testing, in the future, will answer for question how many people are victims of that war. It is predicted that process of exhumation and identification will be finished until 2015 year.

Importance of radiological diagnosis applied to necroscopy.

The authors evaluate the consequences of incomplete necroscopic examinations wherein it was impossible to apply radiological resources to locate firearm projectiles. The study includes 8185 reports from the Instituto Médico-Legal Afrânio Peixoto in Rio de Janeiro, Brazil, representing the totality of corpses processed from January to December 2001; of these, 3122 were gunshot victims, 309 of which were buried with unremoved projectiles, being liable to future judicial reappraisal. During the same period, there were 23 exhumation requests by police authorities, 12 of them querying the existence of projectiles. The authors looked into the formal reasons assumed by the medico legal experts to conclude their reports from incomplete examinations, and suggest that gunshot necroscopic examinations should follow specific protocols, as incomplete autopsies will require further exhumations, at unnecessary additional costs.