With the latest health news reports on the H1N1 which says that H1N1 is Tamiflu-resistant, people are somewhat worried especially with the flu season just months away. However, Reuters reports that this is a single case and we do not have to worry too much. The pandemic alert is still high though which means that you should still be planning to get your flu shot this year when flu season begins.
By Stephanie Nebehay and Laura MacInnis from Reuters
“The first H1N1 infection found to be resistant to the antiviral drug Tamiflu represents an isolated case with no current implications for public health, the World Health Organization (WHO) said on Tuesday.
“The United Nations agency has declared a global pandemic is underway from the virus known as swine flu which has so far been treatable with Tamiflu, made by Roche.
WHO spokesman Dick Thompson said that the discovery of a patient in Denmark whose infection did not respond to the drug, revealed by the Swiss company and Danish officials on Monday, did not amplify the severity of the virus.
“This is an isolated case. At this time, there is no public health implication. But we must remain alert as the virus can change at any time and we must not be complacent,” he told Reuters.
Officials say the patient is now well and no further contagion with the resistant virus was detected.
Resistance to Tamiflu has been previously documented in the deadly bird flu virus H5N1 and seasonal H1N1 flu, Thompson said.
“We need to monitor the virus (H1N1) continuously,” he said, adding that the WHO’s global influenza surveillance network linking laboratories in 97 countries would keep monitoring it.
“WHO is not changing its recommendations for the use of antivirals,” Thompson added, referring to the global body’s advice to its 193 member states.
The WHO has previously said that the H1N1 virus is sensitive to a class of antiviral drugs which includes Tamiflu, known generically as oseltamivir, and Relenza by GlaxoSmithKline, known generically as zanamivir.
Denmark’s State Serum Institute said, when making the announcement on Monday, that it was expected that the strain would at some point show resistance to Tamiflu.
It said that while the patient was found to be infected with a virus strain that had mutated to a form resistant to Tamiflu, the alternative drug Relenza, which is inhaled, remained an effective treatment.
GLOBAL PANDEMIC
The WHO on June 11 raised its pandemic flu alert to its highest level of 6, signifying that the first influenza pandemic since 1968 was under way [ID:nLC321991]
Flu viruses mutate regularly and can develop resistance to drugs at any time.”
Remember, young and old alike are affected by the H1N1 virus, which means that you must not forget to get your flu shot.
Read the rest of the story here.
Blood pressure becomes a serious problem for many people as they grow older. This article from the BBC news Health News site explains that people over 55 should be taking blood pressure medication and can also use natural cures for high blood pressure to reduce the risk of stroke and heart attacks. Read the article further to find out more about this health condition.
“Everyone aged 55 and over should be taking drugs to lower their blood pressure, a London-based expert says. Epidemiology expert Professor Malcolm Law said blood pressure drugs cut the risk of heart attack and stroke even for those with normal blood pressure.
His conclusion, published in the British Medical Journal and backed by other experts, is based on a review of 147 studies, involving 464,000 people. However, the Stroke Association warned the drugs could have side-effects.
The research found most types of blood pressure drugs cut the risk of heart attacks and heart failure by around a quarter and the risk of stroke by about a third.
The studies looked at the effect on two blood pressure measurements; systolic – the pressure when the heart beats while pumping blood – and diastolic – the pressure when the heart is at rest between beats.
The lowered risk estimates were based on lowering systolic blood pressure by 10mm Hg or diastolic blood pressure by 5mm Hg.
Widespread benefit
Professor Law, an expert in epidemiology at the Wolfson Institute at Barts and The London School of Medicine, said: “Beyond a certain age, we’re saying everyone would benefit from taking drugs that lower blood pressure.
“Beyond a certain age, we all have high blood pressure and we would all benefit from lowering it.
“What we call ‘normal’ blood pressure is actually high, and what we call high blood pressure is actually higher.”
Professor Law said the universal use of blood pressure drugs should be seen as analogous to vaccinating the entire population in the event of a flu pandemic.
There was no case for trying to assess who was a top priority, he said, when everybody was potentially at risk.
In fact, Professor Law said giving everybody blood pressure drugs would minimise the risk that people would be alarmed when told they needed to take the medication.”
To read the rest of the story on the BBC news, click here.
We have all heard how taking aspirin can help guard one against heart attack. Now Canadian research may suggest that men benefit more. Read the following research brought to you in the BBC news site:
“The heart-protecting benefits of aspirin may be available mainly to men, Canadian experts have suggested.
Some research studies have suggested that the drug might cut heart attack risk by half.
But an analysis of trials involving 113,000 patients hinted those with a higher number of female participants were less likely to show benefit.
However, the BMC Medicine study was described as “potentially misleading” by one UK researcher.
Heart attacks happen when a narrowed or damaged blood vessel feeding the heart is blocked by a blood clot.
Aspirin can make it harder for these clots to form and studies suggesting this could prevent attacks, or make them less likely, have led to thousands of people worldwide taking the drug every day.
However, the precise benefit has been hard to gauge, with some research coming to the conclusion that it was unlikely to offer any protection whatsoever.
Physical differences
The researchers from the James Hogg iCapture Centre for Cardiovascular and Pulmonary Research, part of the University of British Columbia, believe that gender may be one of the main reasons for this.
They say that the make-up of a woman’s heart and its surrounding blood vessels may be more resistant to the effects of aspirin.
They looked at the ratio of men and women taking part in major aspirin research projects – and found that those involving predominantly men were the most likely to find a benefit.
Conversely, those involving mainly women were more likely to find a lesser benefit, or none at all.
Dr Don Sin, one of the study authors, said: “We found that a lot of the variability in these trials seems to be due to the gender ratios, supporting the theory that women may be less responsive to aspirin than men for heart protection.
“From our findings we would caution clinicians on the prescribing of aspirin to women, especially for primary prevention of heart attacks.
“Whether or not other pharmaceutical products would be more effective for women is unclear; more sex-specific studies should now be conducted.”
This is unlikely to be the last word on who should be taking aspirin – a study of 80,000 women published in March 2007 claimed to have found heart benefits for healthy women who regularly took aspirin.
Long-term aspirin use does raise the risk of internal bleeding and some doctors are reluctant to recommend it for people who have not already suffered a heart attack for this reason.
One UK expert, Dr Colin Baigent, from the Clinical Trial
Service Unit at Oxford University, said that taking aspirin in the months and years after a heart attack delivered equal benefits to men and women.
He said: “This is potentially misleading – by far the largest trial included in this research was concerned mainly with the primary prevention of heart attacks – giving aspirin to people who had never had a heart attack.
“It would be a tragedy if women who are taking it because they had already had a heart attack stop doing so.”
News Source: BBC NEWS
