Archive for April, 2010

Telling partners about chlamydia – how ?

Tuesday, April 6th, 2010

Chlamydia Partner notification is accepted as a vital component in the control of chlamydia. However, in reality, many sexual partners of individuals diagnosed with chlamydia are never informed of their risk. The newer technologies of email and SMS have been used as a means of improving partner notification rates. This study explored the use and acceptability of different partner notification methods to help inform the development of strategies and resources to increase the number of partners notified. Semi-structured telephone interviews were conducted with 40 people who were recently diagnosed with chlamydia from three sexual health centres and two general practices across three Australian jurisdictions. Most participants chose to contact their partners either in person (56%) or by phone (44%). Only 17% chose email or SMS. Participants viewed face-to-face as the “gold standard” in partner notification because it demonstrated caring, respect and courage. Telephone contact, while considered insensitive by some, was often valued because it was quick, convenient and less confronting. Email was often seen as less personal while SMS was generally considered the least acceptable method for telling partners. There was also concern that emails and SMS could be misunderstood, not taken seriously or shown to others. Despite these, email and SMS were seen to be appropriate and useful in some circumstances. Letters, both from the patients or from their doctor, were viewed more favourably but were seldom used. These findings suggest that many people diagnosed with chlamydia are reluctant to use the new technologies for partner notification, except in specific circumstances, and our efforts in developing partner notification resources may best be focused on giving patients the skills and confidence for personal interaction.

Telling partners about chlamydia: how acceptable are the new technologies? BMC Infectious Diseases 2010, 10:58 doi:10.1186/1471-2334-10-58

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Viruses and geometry – where symmetry meets function

Thursday, April 1st, 2010

Microbiology Today  Virus capsids are made from building block proteins that are repeatedly synthesized from a few genes in the virus genome. In this article in Microbiology Today (pdf) Reidun Twarock and Tom Keef discuss the mathematics behind the remarkable symmetry of the viral protective coat and demonstrate how this is far from accidental:

The simplest viruses are nanometre-sized particles consisting of genomic RNA or DNA surrounded by protective protein containers. Like Trojan horses, these containers, or capsids, provide protection and transport for the viral genomes between hosts. One of their remarkable features is the wealth of well-ordered patterns in which capsid proteins are arranged in these containers. It makes you wonder… is there more to this display of beauty than mere aesthetics?

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