Tracking the next pandemic: Avian Flu Talk |
Expecting the unexpected |
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carbon20
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Posted: April 13 2015 at 2:27pm |
On Thursday, The University of Texas Health Science Center at Houston’s School of Public Health, hosted its 23rd Annual James H Steele Lecture, Expecting the Unexpected with Influenza. The event featured the first female scientist to ever have the honor of giving the lecture, Dr. Nancy J. Cox, PhD, former director of the Influenza Division at the Centers for Disease Control and Prevention (CDC) and the CDC’s World Health Organization (WHO) Collaborating Center for Surveillance, Epidemiology and Control of Influenza.
The lecture’s opening remarks were given by Dr. Herbert DuPont, MD, Professor and Director of the Schools’ Center for Infectious Disease (CID), who spoke fondly of his colleague and long-time friend Dr. Steele and how this lecture series honors the incredible contributions that Dr. Steel made to the field of Public Health. Dr. DuPont stated that Dr. Steele’s contributions can be put into 3 buckets:
Dr. Cox was introduced by Dr. Justin Bahl PhD, associate professor at CID, who reminded the audience that this lecture is given by the “Who’s Who” of public health leaders and that with her extensive list of numerous scientific accomplishments and contributions to global public health, Dr. Cox truly exemplified this designation. Dr. Cox began her presentation by openly admitting that when it comes to the Influenza virus, no matter how hard the scientific community continually tries to predict what will come next, they are often found lacking in their ability to do so. She then went on to present 4 very important themes in the field of Influenza research and surveillance:
Dr. Cox spoke about evaluating influenza surveillance data, something she believes is the key point when you are working on a zoonotic problem, as well as the need to be able to reach out to as many different global partners and organizations from those focusing on human health, such as the WHO, to those focused on agriculture and animal health. A prime example of this is WHO’s Global Influenza Surveillance and Response System (GISRS), which very carefully monitors genetic changes that occur in the virus with the aim to accurately assess the pandemic risk.
Dr. Cox stressed the point that contrary to what the majority of the public believe, the seasonal flu poses a much greater threat to the population than a potential pandemic. She highlighted both the infection and mortality rates that occur each year and the unfortunate low influenza vaccination rate in the US.
Dr. Cox spoke on the numerous human-made conditions that promote avian influenza most of which are occurring in the developing world where 80% of the global population now lives, with the majority being impoverished. Conditions include:
In Egypt, from November 2014 to the beginning of 2015, there has been a tremendous surge in the number of human H5N1 cases, with over 116 confirmed cases. This number is concerning to the global community of influenza scientists for it made Egypt #1 in H5N1 case load world-wide.
Dr. Cox stressed in her closing statements that because Influenza is one of the poster children for the One Health concept, where humans can very easily be infected by both swine and avian viruses, it is in our best interest as part of the global community, to invest in both the developing world’s infrastructure and biosecurity. During the question and answer session, Dr. Cox was queried about the low efficacy rate of this year’s influenza vaccine, in which she acknowledged that it was a prime example of “predicting the unpredictable” and “expecting the unexpected” in regards to the virus. She then explained that thousands of viruses in the GISRS network were analyzed to create the vaccine but the main problem was that the data on the true viral trend was not available until July, long after the strains had been selected and the vaccines were manufactured. In a post-event interview with BioNews Texas correspondent Kara Elam, Dr. Cox answered questions that may be of concern to the general public when it comes to Influenza: KE: How can public health scientists help the public understand both the efficacy and safety of the influenza vaccine and its importance? Cox: I think the best way for a public health influenza scientist to talk about influenza vaccines and to try and give people confidence in it is to talk about the history of flu vaccine. So we have had the influenza vaccine for 60 years and initially the vaccines were really given to people with high risk conditions like the elderly or people with underlying heart conditions or respiratory conditions, but we have expanded the definitions to include everyone because the vaccine had such a strong safety profile. So what we can say with a lot of confidence because a lot of surveillance has gone on to look at potential side effects of the influenza vaccines over many years, our surveillance is better now than it was in the past, but there really has been intensive surveillance to look for side-effects — particularly severe side effects. There has been no link found between the influenza vaccine and autism and as a scientist and as a parent I do understand another parents concern about the health of their child and wanting the child to be safe, but when you look at the children who die of influenza and talk to the parents of those kids, you become really convinced that getting the flu vaccine, a very safe vaccine, would be the best way to go for them because of course we definitely want to keep children from dying from a severe infection like influenza. KE: What can we do to get patients to understand it is actually the seasonal influenza they should be concerned with not the threat of a potential pandemic? Cox: I think that fear is an enormous motivator for people and so if there are words that emote fear then people will act and react in a much more dramatic way. I think when people get accustomed to something like seasonal flu it is “just a flu” and I think we have to start explaining much much better what can actually happen — it’s rare, but what can happen to a child or healthy young adult that comes down with flu and becomes very sick, is hospitalized, or even heaven forbid, might die. I think we haven’t done a good enough job in explaining the risks of influenza — and people just think “Oh it’s just another cold.” Well it isn’t just another cold. So we need to get better at explaining what the risks are and we also need to understand what motivates people, so our communication messages need to honed to make sure that they are well understood by the public, because it is only when the communication messages are really well understood and internalized that people are going to be motivated to act and get vaccinated. KE: What are the true concerns the public should have about H7N9? Cox: So I think H7N9 is occurring only in China except that a couple of individuals were infected in China and were Canadian citizens that came back to Canada. Basically it is a problem that doesn’t exist in North America. So there is no need to panic, but what people need to understand is that there are these viruses that pose a pandemic threat that are occurring elsewhere in the world, they could be imported and cause problems in the US — there is no doubt about that, and that it is very well worth having work going on for such a pandemic threat, and having an insurance policy such as a vaccine stock-pile for use in the US and that we need to all be vigilant and we need to increase our science IQs and really try to understand what is going on out there in the broad world. About the Center for Infectious Disease The mission of the Center for Infectious Diseases (CID) is to address public health concerns of the citizens of our state by providing infrastructure and administrative support for multidisciplinary and coordinated research, teaching, and community service programs; to foster epidemiological and biomedical research and training in infectious diseases; and to encourage international collaborative research efforts addressing infectious disease problems of mutual concern. The Center for Infectious Disease has an international orientation because of the global reservoir of pathogens and because of the potential for importation in the U.S. and Texas; the existing expertise in the CID in the area of international health; and the direct application of the clinical and research information learned in foreign settings to our dealing with the epidemic at home. |
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