[Occupational and environmental cancer in southern Sardinia: a survey on ten years of hospitalizations]. / Tumori ad elevata frazione eziologica occupazionale o ambientale nella ASL di Cagliari: un' analisi di 10 anni di ricoveri.

Based on hospital discharges in 1001-2010, we calculated risk of tumours with an elevated occupational and environmental etiological fraction by health district of residence within the Local Health Unit (LHU) N. 8 of Sardinia. With reference to the age and gender-specific hospitalization rates of the whole LHU, residents in the urban Cagliari health district showed an excess risk of haemolymphopoietic cancer (RR = 1.07; 95% CI 1.03-1.12) and bladder cancer (RR = 1.10; 95% CI 1.05-1.16); in both instances, risks were higher among female residents. The highest excess risk for lung cancer was observed among residents in the Quartu-Parteolla health district (RR = 1.13; 95% CI 1.05-1.21), and it was slightly higher among male residents. The results appear to confirm the role of urban factors in increasing cancer risk.

Distribution of 'promoter' sandflies associated with incidence of classic Kaposi's sarcoma.

The patchy geographical distributions of classic Kaposi's sarcoma (KS) and human herpesvirus type 8 (HHV-8), better known as Kaposi's sarcoma-associated herpesvirus (KSHV) remain unexplained. It has been proposed that certain species of bloodsucking insects ('promoter arthropods') promote the reactivation of HHV-8/KSHV and facilitate both HHV-8/KSHV transmission and KS development. This hypothesis was tested by sampling the presence and density of human-biting Diptera with CDC light traps in two areas of Sardinia with contrasting incidence rates of classic KS. In total, 11,030 specimens (99.9% sandflies and 0.1% mosquitoes) belonging to 10 species were collected from 40 rural sites. Five of these species are considered to be possible promoter arthropods because of the irritation their bites cause: Phlebotomus perniciosus Newstead; Phlebotomus perfiliewi Parrot (Diptera: Psychodidae); Aedes berlandi Seguy; Culiseta annulata (Schrank) and Culex theileri Theobald (Diptera: Culicidae). Five species are probable 'non-promoters' because their bites are not particularly irritating: Culiseta longiareolata (Macquart); Culex pipiens s.l.; Anopheles algeriensis Theobald; Anopheles maculipennis s.l., and Anopheles plumbeus Stephens. A significant correlation was found between the geographical distribution of promoter arthropods and incidence rates of KS (Spearman's r = 0.59,P < 0.01). Promoter arthropods were more likely to be caught in areas with cutaneous leishmaniasis and a past high prevalence of malaria, and in areas of limestone, acid volcanic soil and cereal cultivation. The study supports the association between promoter arthropods and classic KS, which may explain the geographic variability of KS and HHV-8/KSHV, and highlights the links with a number of variables previously associated with the incidence of KS.

Reappearance of Aedes albopictus in Sardinia.

Aedes (Stegomyia) albopictus is a vector of major human diseases. From 1979 established populations were found in the Mediterranean Region. The first record of Ae. albopictus in Italy goes back to 1990 and at present it is permanently established in several provinces of central and northern Italy. Ae. albopictus was detected for the first time in Sardinia in 1995, and a new record was reported in 1997. After these two isolated episodes, the "tiger-mosquito" was considered apparently eradicated. At the end of September 2006, two natural breeding populations including adults of Ae. albopictus were recorded in two different localities of South-Sardinia: in the botanical garden of downtown Cagliari and in a private garden of a small village, Teulada, on the south-western coast of Sardinia. The origin of this new introduction of Ae. albopictus in Sardinia is still unclear. In both cases the species has been found in artificial containers in densely populated areas.