Exceeding rates observed in previous research, a new study found four out of five sexually active adolescent women infected with human papillomavirus, a virus linked to cervical cancer and genital warts. Darron R. Brown and colleagues of Indiana University School of Medicine studied 60 adolescent women, ages 14 to 17, at three primary care clinics in Indianapolis. They reported their results in the Jan. 15 issue of The Journal of Infectious Diseases, now available online.
Human papillomavirus (HPV) infection is a common sexually transmitted infection whose effects may range from asymptomatic carriage of the virus to genital warts to cervical cancer. In this study, 95 percent of the subjects were sexually active, and the median number of sexual partners was two. Eighty-five percent were African American, 11 percent were Caucasian, and 3 percent were Hispanic.
Participation in the study involved quarterly visits to a primary care clinic for a cervical swab test and up to five 3-month diary collection periods during which subjects recorded their sexual behavior daily and performed self-vaginal swabbing weekly. Each woman participated in the study for an average of two years. Brown and colleagues collected a total of about 2,100 swab specimens adequate for analysis of HPV infection.
Diana Olson | EurekAlert!
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Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
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The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
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The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
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