Covid is likely to persist once its pandemic phase has passed and circulate each winter alongside the flu. Even after more of us contract coronavirus infection and develop immunity to it or even after an effective vaccine arrives, some people will still get very sick.

I can't understand why the front pages of newspapers can cover bird flu and swine flu and everybody is up in arms about that and we still haven't really woken up to the fact that so many women in sub-Saharan Africa - 60 percent of people in - infected with HIV are women.

I read the 'Old Testament' all the way through when I was about 13 and was horrified. A few months afterwards I read 'The Origin Of Species', hallucinating very mildly because I was in bed with flu at the time. Despite that, or because of that, it all made perfect sense.

We often joke about men moaning about being ill, whether it's man flu or anything else. We want them to be silent and strong about these things. And that's quite dangerous when it comes to depression, because talking about it helps. People bottle it up until it's too late.

New diseases like SARS and bird flu cause anxiety in the community. People get worried, some to the extent that it even affects their health. You feel very sad, and yet you must carry on and maintain your cool in very trying and difficult moments. You have to tough it out.

A century ago the Spanish flu confounded scientists and devastated whole regions, but while today's society has air travel and an enormous, heterogeneous population, we also have antibiotics, fantastic communication networks and, perhaps most crucially, more data than ever.

As demonstrated by the emergence of the Mexican swine flu in the U.S., infectious diseases have little respect for borders; helping developing countries detect and deal with their diseases is the surest way for us to protect ourselves from new and potentially devastating epidemics.

Look, if you have somebody who doesn't have health insurance, who doesn't have a doctor or dentist, and in order to deal with their cold or flu or dental problem, they go to an emergency room - in general, that visit will cost ten times more than walking into a community health center.

Swine flu is not an anomaly. We know that swine flu - like the vast majority of new outbreaks - comes from animals. We should be monitoring those animals and the humans that come into contact with them, so we can catch these viruses early, before they infect major cities and spread throughout the world.

I have to say, I have to tell you that my kids had a most marvelous time having two moms. When my daughter was at university, she got flu. And both mums rushed to be with her. And we were both looking after her and making soup and tidying up. And one of her friends came in and went, 'Two mums? Not fair.'

Seasonal flu is now a pandemic that lasts for years and years because you've got so many people that it's jumping back between northern and southern hemispheres and moving itself around the world. By the time it gets back to where it started, it's changed sufficiently so that people are no longer immune.

When a person tests positive for HIV, it is not a test for the virus itself but for antibodies to the virus, and the test is not able to distinguish between HIV antibodies and a multitude of other antibodies. Many conditions can lead to a false positive result, including flu shots, hepatitis, and pregnancy.

Listener and reader input is every bit as important as anything any of us can say. We'd be like crazy people chattering in the middle of that empty field that Joe Biden thinks we should stand in to be safe from swine flu if it weren't for the calls, the letters, the blogs, and the reaction from our audience.

What works most effectively for quelling disease outbreaks like Ebola is not quarantining huge populations. What works is focusing on and isolating the sick and those in direct contact with them as they are at highest risk of infection. This strategy worked with SARS, and it worked during the H1N1 flu pandemic.

Why do our kids need to be protected from flu? Isn't that something only for the cold western countries who have long, cold, below-zero winters? That's what I thought until I learnt that India's tropical weather facilitates circulation of viruses around the year, unlike the West, which sees a peak only during winter.

People say: 'Models are so young, they're so skinny.' But Mr. Balenciaga used models at 16, and that will never change. People say they are skinny, but there is a difference between skinny and sick. If someone is sick, they're sick. It's not because of fashion. If I have flu, I have flu; it's not because I work in fashion.

It just seems to me that the world's kind of a mess, and the more messy it gets, the more interested I am in escapist fare. Having a good time is something that isn't about the war in Iraq or the Asian flu or the Kyoto protocol - things that are horribly depressing to consider in our real lives. I'm eager to get away from them.

The cost of the vaccine is truly minuscule when you think about the benefits you're getting from an opportunity-cost standpoint. If you're going to miss several days of work - and you will - with high fevers, body aches, nausea, and vomiting... you're going to be losing out on a lot more money and productivity if you don't get the flu shot.

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