Your partner started coughing on Tuesday. Your child came home from school warm. Whatever it is, it is
in the house now — and you feel completely fine.
That in-between stretch is oddly uncomfortable. You are not ill, so there is nothing to treat. You are
not in the clear either, so it is hard to make plans. Most people spend it either ignoring the whole
thing or buying something at the pharmacy out of sheer momentum.
Here is a more useful way to think about those few days.
Feeling fine mostly means it is too early to tell
Respiratory illnesses have an incubation period — the gap between exposure and symptoms. Depending on
what is going round, that is commonly somewhere between one and four days, and for some illnesses longer.
So feeling well on day one is not evidence of much. It usually means the clock has not run out yet.
This matters for a practical reason: people tend to relax their precautions precisely when they feel
fine, which is also the window where they are most likely to be incubating something. Knowing that the
quiet period is normal makes it easier to keep doing the dull, useful things for a few more days.
The dull things that actually reduce spread
None of this is novel. It is listed here because it is what the evidence supports, and because it tends
to get skipped in favour of something that comes in a bottle.
Wash hands properly and often, especially before eating and after contact with shared surfaces.
Open a window. Ventilation genuinely lowers the amount of virus hanging around indoors, and in
winter the instinct is to seal the house shut.
Stop sharing glasses, bottles and towels. Households slip on this constantly.
Sleep separately if that is practical, at least while symptoms are active.
Clean the handful of surfaces everyone actually touches — door handles, taps, the fridge, phones —
rather than attempting the whole house.
It is unglamorous. It is also the part with the most evidence behind it.
The "get ahead of it" instinct, and where it goes wrong
The common reaction at the first hint of exposure is to take something, often at a much higher dose
than usual, often several things at once.
Two problems with that.
The first is that it rarely does what people hope. The second is more important: this is the single
most common moment for someone to take a large dose of something that interacts with a medication they
already take, or that is not appropriate for them — in pregnancy, while breastfeeding, with a kidney or
liver condition, or alongside a blood thinner.
If you are reaching for something you do not normally take, that is worth a short phone call rather
than a guess. It is a two-minute conversation that occasionally prevents a genuinely bad week.
If you are higher risk, the time to plan is now
This is the part most worth acting on, and it is routinely left too late.
If you are pregnant, immunocompromised, managing a chronic condition, over 65, or caring for someone
who is, talk to your physician before symptoms start — not after.
The reason is specific. Some treatments for influenza and COVID-19 work best when started early in the
illness, and that window is measured in days. Working out who to call, whether you are a candidate, and
how quickly you can be seen is much easier to do while you feel well than at 7pm on a Saturday with a
fever.
Have the plan. You may never need it.
What we would ask you to do about appointments
If you have something booked with us and someone at home is unwell, tell us when you check in, or
call ahead if you can.
We are not going to turn you away for a household cold. What it changes is the practical side — how we
schedule you, what we do that day, and how we keep it from travelling to the person in the next chair.
Some things are better moved by a week, and it is easier for everyone to decide that in advance.
If you develop symptoms yourself before the appointment, call us. Moving an appointment is
straightforward.
What this is not
Worth stating plainly, because this is a med spa writing about illness and the line matters.
Nothing we offer prevents you from catching a respiratory infection, shortens one, or treats one. The
things that act on infection are vaccination, testing and the antiviral or antibiotic medication your
physician prescribes when it is indicated. If you think you may have influenza or COVID-19, that
conversation belongs with your physician or urgent care, early.
What our Functional Health team in Philadelphia and Radnor does is different work: looking at the
things that sit underneath how you feel over months — sleep, energy, bloodwork, what has changed and
when. That is a useful conversation. It is just not the one to have in the middle of a household flu.
So for this week: wash your hands, open a window, do not start anything new without asking, and if you
are higher risk, make the call while you still feel fine.
General patient education. Not a substitute for medical advice, diagnosis or treatment from your
provider. Individual circumstances vary. If you may have influenza or COVID-19, contact your physician
early — some treatments work best when started promptly.
