The More Popular You Are, The Earlier You Get Flu (2 Weeks to be Exact)

Actual research was done regarding whether popularity predicts flu trends. Dr Fowler at UCSD and Dr. Christakis at Harvard found that "popular" friends on average get flu 2 weeks before everyone else.

The way this friendship paradox works is as follows: If a person is asked to name a friend, that friend is statistically likely to be more popular than the original individual. Such "popular" individuals typically interact with more people increasing the likelihood of their coming into contact with flu and becoming sick from it earlier than those who are not as popular.

This finding kind of reminds of how miners use a canary bird as an early warning system to see if there are toxic levels of carbon monoxide present before it causes harm to humans.

Read a Reuters story on this research here.

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USNews: Cold versus Allergies... How to Tell The Difference

US News and World Report came out with a story on July 27, 2010 regarding how one can tell the difference between an allergy versus a cold, especially since each has symptoms in common.

Especially with mild symptoms, it may be hard even for an ENT to distinguish the two. Add chronic sinus infections and flu to the mix, it can be downright difficult without allergy testing, CT scans, and other types of testing to come up with a correct diagnosis.

To help distinguish among these possible illnesses, at least based on history, here is a chart our office has made.

NIH also has produced a chart that can be seen here.

Click here to read the US News & World Report story.

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Possible Dystonia (Rare Neurological Condition) After Flu Shot

Desiree Jennings, a former Redskins cheerleader, received a seasonal flu shot on Aug 23, 2009 and has suffered from a possible dystonia reaction from the flu vaccination resulting in difficulties in eating, talking, and walking.

Here is a link to a video where Dr. Stephen Grill (neurologist) is interviewed by Fox News regarding Desiree's condition.

Here is a video/article of the initial story.

This story is a case of a VERY unfortunate EXTREMELY rare side effect (if true) of the flu vaccine. People should still get the flu vaccine, but be aware that it is not 100% benign in all cases.

However, it seems that Desiree's flu shot reaction may have been psychogenic (and not a true side effect of the vaccine at all). Read this blog article which goes into this in more detail.

Regardless, people have developed rare neurological conditions called laryngeal dystonia otherwise known more commonly as spasmodic dysphonia. The way Desiree talks (from what I can hear from the videos) is distinctly different from patients who suffer from classic spasmodic dysphonia. Click here to hear what laryngeal dystonia/spasmodic dysphonia sounds like.

(Of note, I received both the seasonal and the H1N1 vaccine and have encouraged all my friends, family, and patients who inquire to do so as well.)

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Egg Allergy and the Flu Shot

Several patients have called our office asking whether it is safe to receive the flu shot if they are egg allergic. Generally speaking, for most patients, the blunt answer is that it is safe.

The flu shot vaccine (both H1N1 and seasonal) are egg-based from which this concern arises. It also doesn't help that the pre-flu shot questionnaire specifically asks about egg allergy. Though egg-based, most of the egg protein is filtered out such that there are no egg contaminants. However, it is possible that some egg is present in a vaccine.

To play it safe, the absolute safest way for a patient with egg allergy to get the flu shot is via a few steps:

1) Get a test dose of the flu vaccine where a small amount (0.025cc typically) of the flu vaccine is administered sub-dermally.
2) Wait 10-20 minutes.
3) If there's no reaction (redness and swelling of the skin), get the shot properly into the muscle.
4) If there's a large wheal reaction, it's probably best not to get the flu shot or see an allergist to get desensitized prior to receiving the injection.

Not all practices may be familiar with these particular steps. If that's the case, request to take the flu vaccine to an allergy office (including ours), and have us administer it. (Please note that we do not provide egg desensitization.)

If you are only IgG allergic and not IgE allergic to egg, no need to worry. Get the flu shot.

For a more in depth discussion, click here to read a document prepared by the American Academy of Allergy Asthma & Immunology.

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