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LONDON (Reuters) - The new strain of bird flu that
killed 36 people in China has shown for the first time Tamiflu resistance,
which the scientists described as "worrying".
In one patient, the gene mutation responsible for the resistance seems to have
emerged after the infection took hold, probably as a result of treatment with
Tamiflu, raising concerns that resistance may occur as a result of drug
"This apparent ease with which antiviral resistance arises in the A/H7N9
virus is worrisome, should be closely monitored and evaluated response plans
for future pandemics," the researchers said in an article published
Tuesday in the medical journal The Lancet. In most of the 14 patients analyzed, Tamiflu successfully reduced the amount of
virus found in throat swabs and helped accelerate clinical recovery. But
it had no impact on the amount of virus detected in samples from three patients
who became seriously ill.
A spokeswoman for the Swiss drugmaker Roche said Tamiflu resistance rates
remained low worldwide, but added that the company took the problem of
resistance "very seriously" and was working with health authorities
to monitor the situation.
The H7N9 virus has infected 131 people in China since February, but there have
been no new cases since early May, according to the World Health Organization
Experts from the United Nations agency said last week that the outbreak of bird
flu in China had caused losses 6,500 million dollars to the economy.
Scientific studies have established that virus to transmit it people birds,
probably mostly chickens.
But experts have not yet identified the source of the circulating virus-the
"reserve" - that is taking the chickens to enter and
pass strain sporadically people.
Research & Development
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The pharmacy profession, exercised with the title Chemical - Pharmaceutical, is oriented toward science, technology and use of medicines in order to meet the needs of the population in this important aspect of health.
Career Opportunities: These professionals can exercise independently, installing its own pharmacy or pharmaceutical laboratory.