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Science News for January 24, 2006


Fitness counteracts cognitive decline from hormone-replacement therapy

A new study reveals that high fitness levels can enhance the effects of short-term hormone treatment and offset declines associated with long-term use. Researchers analyzed brain tissue volume in 54 postmenopausal women and found a significant association between higher fitness levels and greater tissue volume in key areas.

Duck-billed dino crests not linked to sense of smell

A University of Toronto study has ruled out the theory that duck-billed dinosaurs' crests were linked to their sense of smell. The research, led by David Evans, found that the brain changed little from non-crested dinosaur ancestors, suggesting the crests may have been used for visual display or attracting mates.

SourceUniversity of Toronto·JournalPaleobiology·DateJan 24, 2006

Less than half of US healthcare workers get flu shots

A UCLA/Harvard study reveals that less than half of US healthcare workers receive flu shots, with lower rates among African American and younger workers. This low vaccination rate increases the likelihood of flu transmission to patients, highlighting the need for targeted educational campaigns to improve outreach and vaccination rates.

SourceUniversity of California - Los Angeles·JournalJournal of General Internal Medicine·DateJan 24, 2006

Study: Newer antibiotic more effective at treating elders' pneumonia

A study led by Dr. Antonio Anzueto found that the newer medication moxifloxacin HCI is more effective at treating community-acquired pneumonia (CAP) in elderly patients, with a recovery rate of 97.9%, compared to 90% for the standard medication levofloxacin. The study also assessed cardiac safety and found both treatments to be safe.

SourceUniversity of Texas Health Science Center at San Antonio·JournalClinical Infectious Diseases·DateJan 24, 2006

A new way to help computers recognize patterns

A new test developed by Ohio State University researchers helps identify the best algorithms for specific applications, reducing errors and improving results. The test rates algorithms on a scale from zero to one, providing a quick way to determine which methods are most effective.

SourceOhio State University·JournalIEEE Transactions on Pattern Analysis and Machine Intelligence·DateJan 24, 2006

Bird flu poses threat to international security, Illinois scholar says

A University of Illinois scholar warns that avian influenza poses a significant threat to international security, citing the potential for human-to-human transmission and widespread economic disruption. The expert emphasizes the need for global coordination and increased surveillance to prevent the spread of the virus.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalDefense and Security Analysis·DateJan 24, 2006