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C Bettini

Publications and source records attributed to C Bettini.

5 recordsLinked to original sources
PubMed1998

HGV/GBV-C infection in patients with acute hepatitis of different etiology and in patients with chronic hepatitis C.

To investigate the prevalence of hepatitis G virus (HGV/GBV-C) in patients with liver disease and to confirm its hypothesized ability to cause liver damage, we studied 130 subjects; 61 had chronic hepatitis C virus infection and 69 had acute hepatitis of either defined etiology (n = 57) or of unknown origin (n = 12). Positivity for HGV/GBV-C RNA was detected in 10 of the 61 subjects with chronic hepatitis C (16.3%) and in 11 of the 57 subjects with acute hepatitis of defined etiology (19%), whereas we failed to detect HGV/ GBV-C viremia in subjects with hepatitis of nonestablished etiology. Patients exhibiting positivity for HGV/GBV-C RNA were found to be comparable to those exhibiting negativity for HGV/GBV-C RNA in terms of both liver function tests and Knodell's score (in liver biopsies); the affect of HGV/GBV-C infection on the biohumoral and histological activity in patients with chronic hepatitis C therefore appears to be minimal or absent. Similar clinical features were observed in patients with acute hepatitis of known etiology whether they were positive or negative for HGV/GBV-C RNA. However, long-term clinical studies are still required to clarify the actual impact of HGV/GBV-C co-infection. In our geographic, i.e., a region or north-east Italy, HGV/GBV-C infection appears to be strictly related to intravenous drug use, and this agent does not seem to be responsible for acute hepatitis of unknown etiology; other etiological agents are probably involved.

Acute Disease↗
PubMed1996

Investigation of a Q-fever outbreak in northern Italy.

OBJECTIVES: A study was conducted to evaluate the extent of a Q-fever epidemic through active case finding in the area of Vicenza (north-eastern Italy), and to identify risk factors for Q-fever in this outbreak. METHODS: 1) Descriptive epidemiology; 2) Seroepidemiological survey; 3) Case-control study. 1) Epidemic curve and maps with the location of cases. Identification of the road followed by the flocks of sheep. 2) Cross-sectional study on humans and flocks of sheep tested for anti-Coxiella burnetii antibodies. 3) Cases were defined by the presence of fever > 38 degrees C plus serological confirmation. Controls were 94 apparently healthy individuals attending outpatient facilities for control visits or certification, group-matched by geographical area, age and gender. A standardized questionnaire was administered by trained interviewers. Odds ratio and 95% confidence intervals (CI) were used to evaluate risk factors for Q-fever. RESULTS: A total 58 cases were identified in a 5-month period. Male to female ratio was 2.8:1; mean age was 42 years (range: 20-65 years). Twenty-eight patients (48%) were hospitalized. Fever was accompanied by asthenia (81%), headache (76%), chills (72%), and myalgia and arthralgia (53%); cough was present in 47% of patients. Rx abnormalities were found in 81% of the patients undergoing chest X-ray. Among 111 apparently healthy family members who underwent serological testing, four (3.6%) had antibodies to Coxiella burnetii. Three flocks which passed through the outbreak area between late May and early June were shown to be infected, with prevalence of antibodies ranging between 45 and 53%. The case-control study showed a significant association with exposure to flocks of sheep (Odds ratio = 6.1; 95% CI 2.5, 16.3). Other potential risk factors were not more commonly reported by cases with respect to controls. CONCLUSIONS: Indirect exposure to flocks of sheep was a determinant of this outbreak of Q-fever. This finding suggests that transmission occurred through inhalation of contaminated airborne particles. The importance of control measures should be stressed in areas traversed by flocks of sheep.

Adult↗