Incubation period for chicken pox?

[Misspixietrix]

Sorry if this is in the wrong place, I weren't sure where to put it. Dd had chicken pox last week, she's better now and have been told by the nurse that she can go back to school on Monday. Silly question but will her Db definately get it? they have 2 christmas partys to go to next week but obviously I don't want to put any young one's at risk if Ds will be in the incubation period himself, then I know I can politely decline their invitations. Hope this makes sense X

He will almost certainly get it - it can incubate up to 21 days (but more usually a couple of weeks). Once you know he is sickening you really should keep him in, but he will only be infectious just before the spots come out so you don't need to stay home right up until then.
He'll probably time it just for Christmas...

Hi yes I agree 21 days. My 13 year old daughter came down with it exactly 21 days after her brothers first spot. On Christmas day! We were quietly congratulating ourselves that she'd missed out yet again! She got it very badly too, aparrantly it is worse if you catch it from a sibling the doctor said.

I didnt get it when my entrie class had it aged 6.

Got it at 19 instead, much worse. Still got deep pock marks on my fore head at 34.

She'll have been infectious for 2-3 days before the spots came out and for about a week afterwards, and the incubation period is 10-21 days, so your son could break out in spots anywhere from 7-28 days after she got her first spot. In the case of my elder two it was two weeks exactly.

He could well be incubating and infectious next week, or he could be incubating but not yet infectious, or he could (very unlikely but possible) not be incubating at all.

Statistically it is worse if you catch it from a sibling than if you catch it from casual contact (theorised that it's because of the constant exposure, but AFAIK they aren't entirely sure), but DD1 was only very very slightly worse than DS had been.