Published: May 1st 2009 - at 11:58 am

Swine flu: the threat is real


by Debi Linton    

My usual response when some sickness hits the news is to roll my eyes and change the channel, telling myself it has little to do with me and will probably amount to nothing and it’s not worth worrying about. Earlier this week I decided to crawl out of my “epidemic scare stories are boring exercises in mass hysteria” hole in the ground and educate myself.

I started paying attention to what people were saying  – and by ‘people’, I don’t mean the mainstream media, who as always are screaming loudly for no other reason than that announcing the new apocalypse is more fun than talking about money or whether or not we should prosecute confirmed warcrimes.

The BBC are currently hosting a page called: Swine flu: How serious a threat? basically seems to say “we just don’t know yet: probably not too bad but ‘flu is unpredictable.” WHO have upgraded the influenza pandemic alert to level 5, on a scale of 6. This doesn’t mean that we’re 83% of the way towards the need to be ware of the walking dude; the alert scale is more structured than that:

Phase 5 is characterized by human-to-human spread of the virus into at least two countries in one WHO region. While most countries will not be affected at this stage, the declaration of Phase 5 is a strong signal that a pandemic is imminent and that the time to finalize the organization, communication, and implementation of the planned mitigation measures is short.

It’s not about the numbers – how may or few people have suffered from or died from the ‘flu yet, but recognition that transmission is occurring. The reason to worry is not in the numbers of people affected, but in the potential. This is the lack of understanding that accounts for my usual blase attitude towards disease outbreaks; I saw what I thought of small numbers and lots of people talking about what ‘could’ happen, and my cynical hat comes out. After all, I’m used to not talking about what could happen in favour of focusing on what has happened – everything I study has long since stopped evolving.

Viruses don’t stop evolving. They’re famous for it, in fact. They have a very rapid lifecycle that promotes response to selection pressures, and a very great part of those selection pressures is the immune systems of the host organisms; in this case humans and pigs. The basic tenants of evolution is very simple: the environment (host organism) changes, and the organism changes to continue living in it; at the same time, organisms change for other reasons, and this could open up new environments for the organism to live in.

When H1N1 crossed from pigs to humans, it showed that evolution in action, and opened up a whole new environment to live in, with whole new challenges in our response (both immune and social) to overcome, and because it’s a new virus, we can’t predict how it will react. But we can be sure of something: we won’t have hard evidence that this is a definite threat until it’s too late to do anything. We know this is a ‘flu virus, but that’s like knowing that an animal is a bird; until it’s been observed and studied we won’t know whether we’re dealing with a pigeon or an albatross, and if we wait until we know… I’m trying to fit this into a Coleridge analogy, but it’s just not working. You can do your own.

There have been, so far, relatively few worryingly serious cases, but even plain old run of the mill regular flu is nasty if you’re unlucky. This is a new virus, and as such the human population has no natural immunity to it (yet); so whether a case of it is serious or not, it has the opportunity to spread fast. And when viruses spread fast, they evolve fast. So even if it is no worse than seasonal flu right now, by the time it’s had the chance to spread more it will be able to evolve further and it could get worse. Still, we’ve no real idea how potentially bad it is in its current form, because we just don’t know.

“Hope for the best, plan for the worst” is, as always, a helpful rule of thumb. What we need to be doing now; what by all accounts it seems we are doing, is encouraging sensible behaviours to reduce spread, to stock up on anti-viral drugs, and to prepare ourselves to provide healthcare at home and aid abroad when needed.

So don’t panic; panicking solves nothing and we don’t know that we’re all going to die. But deliberately being contrary does no good, either. Just because some people are overreacting, it doesn’t mean there’s nothing to react to, and joining the collective chorus in order to put down valid concerns could wind up being just as harmful if – I’ll emphasis the big if – we do end up with an humanitarian disaster we could prevent with the right action now.

Oh, and those facemasks? Only prevent you transmitting the virus; they don’t prevent you catching it. And they make you look like a prat.

Some helpful Pages
Effect Measure’s Swine Flu category
The Flu Wiki
H1N1 Flu outbreak map
Ben Goldacre on the same subject


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About the author
This is a guest post. Debi is a museum-based science communicator, who has a job now but is still working on her PhD. She blogs about a range of subjects at Advancing the Sum Total of Human Knowledge and Endeavour
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Story Filed Under: Blog ,Environment ,Health


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Reader comments


Thanks for a nicely balanced post :) It’s disappointing to see the way that the story has been polarised in the media – as George Bernard Shaw once said: “Newspapers are unable, seemingly, to discriminate between a bicycle accident and the collapse of civilisation.” New and evolving viruses are always a threat, and it’s important to be prepared.

2. Lee Griffin

Great post there Debi, it’s just a shame for me that politically swine flu is being used already as something that is, politically, an achievement for coming out of the other end of (whenever that is).

3. Debi Linton

Thanks, Lee.

I’m having trouble parsing the second half of the comment, though. Apparently my brain is used up for the week.

I predict those facemasks will become vogue. Will Jack Bastard Straw be asking constituents to take them off in his office?

On a serious note, I am slightly concerned. I was able to ignore the threat as long as the media blathered on about, but now there has been a balanced, intelligent post on it I am not so sure.

5. Fellow Traveller

I’ll believe in the world threat posed by this new virus when states prohibit all international air travel. But that would threaten the profits of an already struggling air travel industry and upset a lot of Westerners who can’t live without their holiday in the sun. I read a WHO expert predict 1 million deaths if it does turn into a pandemic – just to put this into perspective according to the UN/WHO 10 million children in poor countries every year die of preventable disease. No one in the wealthy West notices their passing bar a handful of hand wringing concerned persons and the medical researchers who struggle against it. I think we can lose 1 million – it’s a drop in an ocean comprising 6.5 billion. Most of the fear generated by this virus stems from the fact that it threatens affluent white westerners.

Again – if it really does pose an immense threat, demand a worldwide ban on air travel. 99% of those journeys are completely non-essential.

Traveller, they didn’t have air travel as is during the flu outbreaks of 1918, the 1950′s or the 1960′s. It still spread globally. Shutting down airtravel would at best somewhat delay the arrival, not stop it. Its good to see that both those panicing and those dismissing can put out uninformed tripe, however.

Well, how many people are likely to be killed by police in the UK? Should we not pay attention to that? Can we talk about nothing except third world poverty? This doesn’t seem reasonable. People are more concerned about issues close to them; an illness they may end up having, that it is possible will kill people they know, is obviously of concern to people. Thats a natural result of people valuing personal relationships. Acting as if we should completly ignore that is inane.

7. Lee Griffin

Debi:

I read a news item where Brown was talking about how this recent struggle he’s been in (Gurkhas, expenses) is nothing compared to the big issues that Labour will be delivering on. He cited the economy and swine flu.

It doesn’t fill me with confidence when a prime minister is either a) trying to score kudos points off of the media frenzy of the moment or b) actually believes that a government should be applauded for planning the best defence against the virus given both how much warning there’s been and how little is actually in politicians hands as to how it ends up playing out.

I mentioned it as that for me is why I tend to automatically think it’s hyped up, because politians…well, Brown…is jumping on it and flogging it for what it’s worth in an attempt to say “look at me, aren’t I great?”

@Fellow Traveller

A worldwide ban on air travel would cause (more) economic chaos, which would also have a serious impact on many developing countries that rely on things like tourism to support their economies. It would do almost as much damage as a virus. Apart from that, great idea.

9. Debi Linton

Thanks for the clarification, Lee.

I’d agree to an extent, except that politicians jump on anything to claim points, and I’m not sure what Brown does has much bearing in either direction on the seriousness of a situation.

10. Shatterface

I’m looking forward to being one of the few survivors of the aporkalypse.

Most people have never had to wank a horse or kill a badger with a hammer let alone make candles from their own earwax so my survival skills will guarantee me a high position in future society.

11. Fellow Traveller

Traveller, they didn’t have air travel as is during the flu outbreaks of 1918…

Nice try, they had ocean liners conveying huge numbers of people all over the place (such as Ellis Island in NYC). Remember the Titanic, the Lithuania etc? Thousands of ships like them plied the seas taking people from one continent to another (ships with people confined in extremely cramped quarters in Third class – the perfect environment for a disease to spread). These acted as vectors unless the virus got conveyed by high altitude winds or something. Air travel from the 50s onward gradually took away their business.

How did part (not all) of the Third World become dependent on tourism from the West in the first place? Does Western tourism really spread the wealth? Have we got another example of ‘trickle down economics’? Good to hear that the third runway at Heathrow will benefit the poor, brown folk of the planet. Someone get the Prime Minister’s PR people on the line – they need to know this pronto. If you object to it – you want the poor and downtrodden to remain so: you want to promote the poverty and disease of undeveloped countries.

FT – the great thing about trade is that it benefits everyone, so long as it is done consensually. We might build airports for our own benefit, but it can benefit everyone else too.

13. Lee Griffin

“I’d agree to an extent, except that politicians jump on anything to claim points, and I’m not sure what Brown does has much bearing in either direction on the seriousness of a situation.”

No, it has no indication at all, just explaining that is my personal reason (perhaps other peoples?) as to not take it so serious on first instinct. He’s probably taking a gamble on it not coming to anything here more than anything else, then credit claiming can begin.

14. Fellow Traveller

FT – the great thing about trade is that it benefits everyone, so long as it is done consensually

I didn’t propose prohibiting trade between nations – cargo can still move by ship as it always has done. I said I’d consider the problem a serious global threat if the world’s states initiated a ban on passenger air travel (for the duration of the crisis although if you take the threat to the world posed by climate change seriously I think one ought to consider a permanent ban on all but medically necessary travel). But I do doubt whether the world’s poor really benefit from tourism to their countries. The owners of the gigantic resorts do, certainly.

Some countries have banned flights to and from Mexico which does indicate a perception of threat (on the part of those states – mainly in South America). Apparently, according to an AP report, health officials don’t consider erecting a cordon sanitaire a means of stopping the spread of the disease. Which implies that one can simply do nothing – even staying at home and seeing no one (the order given to the Mexican population) won’t stop you getting it (who advised the Mexican State to order this isolation – according to anonymous health officials it doesn’t stop disease spreading at all). Health officials seem to place all their hope of stopping it on developing an effective vaccine (one doesn’t exist at the moment and who knows how long it will take to make one – years I’d imagine unless the researchers get lucky).

As far as I can see – according to the experts – isolating oneself either on an individual or collective basis – wearing face masks or any other cosmetic measure – won’t stop it – only a vaccination program will. So, in the absence of a vaccine, it becomes a matter of luck or fate or what have you whether you succumb. Doesn’t seem much point in worrying about it – it’s out of your hands. You can’t do anything short of getting injected with a vaccine to avoid it. No vaccine exists. If you’re the kind of person disposed to worrying about the prospect of catching a disease then you worry. If not, you don’t. The only people who can do anything to stop it are in labs right now trying to isolate the virus and develop a vaccine. Everyone else has nothing to do, except worry.

FT- It doesn’t take an Ocean Liner. Flu’s in 1889 and 1918 spread to Mongolia, Pacific Islands, across the Americas, Africa… any kind of trade and movement spreads it. Only really draconian measures work to have any impact stopping it. Its probably beyond our capabilities to stop all trade; its certainly implausible. Grounding *all* flights without stopping other movement will do no good in stopping a pandemics spread. Lets note no serious outbreaks have been caused by air travel. How does not taking pointless measures mean its not a serious issue?

Well, its debatable if stopping flights to Mexico will really have any impact. The experts seem to think not. It is how ever good in showing you to be a decisive government acting fast. The same with pointless pork bans.

Vaccines for flus like this can often be developed in months and produced to be widely distributed within a year. How do you think they do annual flu vaccines? Obviously its not certain they can do that, but to say it will probably be years is just something you have made up.

Your last paragraph seems to throw out all your previous points, so I’m not sure why you bothered to post them. The primary aim of measures is to slow and lower the rate of infection and minimise deaths. They can result in 10-20% less of the population being infected. They can also delay when infections occur, hopefully until after vaccine availability.

16. Charlieman

Epidemiologists will find the week ahead particularly interesting/worrying. For those who do not work in higher education, note that Monday/Tuesday is the start of a new term, and over the weekend something like one million young people will be moving from home town to university town. Many international students have stayed at college for the vacation, and few will be arriving from the Americas. However student migration is still a fascinating melting pot for the spread of illness. The start of the academic session in September each year, for example, commonly precedes outbreaks of hepatitis in university towns.

17. Shatterface

Freshers should worry more about the clap.

18. Charlieman

Fellow Traveller: “I didn’t propose prohibiting trade between nations – cargo can still move by ship as it always has done.”

I assume that you mean ships that are operated by robots rather than sailors? If I recall correctly, the spread of HIV/AIDS in North America is directly linked to a sexually active air steward. Unfortunately for the man and his family, his name will be eternally connected with the infection; the reality is that if he were not the vector for the virus, somebody else would have spread it.

If it takes just one individual (in theory) to infect all continents with a virus that is more difficult to transmit than swine flu, how should we respond? I kind of like what we are doing now. Don’t travel to Mexico (and other places to follow, no doubt). Don’t go the office or cinema if you are suffering flu symptoms. Acknowledge that flu is horrible to you but that you are not going to die unless you are already ill. Wait for the virologists to learn more.

So don’t panic; panicking solves nothing and we don’t know that we’re all going to die.

If you don’t know that you are going to die, you are a fool.

If you alter your behaviour because you are worried about dying from swine flu, you are a complete fool.

20. dreamingspire

Did nobody (including Debi) see the TV explanation of H1N1? It attacks the upper respiratory tract (rather than the lower one), which is why the illness in most people is relatively mild. If I interpret the explanation correctly, it doesn’t mutate very often – so we should be able to catch up with it by producing a vaccine (except that another report is that in this country there has to be a trade-off between manufacturing vaccine for this strain and manufacturing the vaccine that is already planned to be given this autumn).

21. Nich Starling

I agree that his should be a concern.

People’s arguments, like thouse of that fool Andrew neil on TV this week are that because Burd Flu hasn’t mutated yet, it won’t, and on that basis Swine Flu is something to not worry about either.

History tells us that in the past flu “has” mutated, on several occasions, and it will again. We may be lucky this time that it is H1N1 and not H5N1 that has made the jump to humans. The death rate from this flu may be <1% whereas H5N1, according to independent experts (not governments) might kill 10-25% of the world population.

A lucky escape this time, but no reason to ignore the very real threat,

The BBC today:”Flu death toll ‘less than feared’”
http://news.bbc.co.uk/2/hi/americas/8030365.stm

Mexico have actually revised the death toll.

23. Dan Hardie

Mexico have?

One more time, for the not-terribly-clever person: there is a very small chance that swine flu (or some other possible pandemic source) could become a very big problem. Taking precautions against such low-probability but potentially catastrophic events is something that individuals cannot adequately do. This is one of the reasons that we have something called ‘government’.

The likelihood is – and has always been, if you read the epidemiological literature- that very few people will be killed by this outbreak of swine flu. But ‘it is almost certain that few people will be killed by this outbreak’ does not mean ‘it is absolutely certain that few people will be killed in any outbreak, so we can all just ignore the problem’.

Therefore you do not say that governments should ignore public health problems just because the tabloids are getting hysterical again, or that any stockpiling of drugs is merely a scam inspired by the drug companies (‘some guy said so in the Independent, it must be true’). Unless you’re stupid, of course.


Reactions: Twitter, blogs
  1. Liberal Conspiracy

    New post: Swine flu: the threat is real http://tinyurl.com/cmcd93

  2. IB

    #lt Guest post on LC Swine flu: the threat is real http://snipurl.com/h5o3v

  3. Liberal Conspiracy

    New post: Swine flu: the threat is real http://tinyurl.com/cmcd93





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