Our nursery deffo not got a cold & I hate to break it to you OP, your kiddo is about to start nursery & get 500 colds & coughs a year. 🙈 that’s why as an experienced nursery parent, I exercise my own judgement on illness. So do nursery, ours are very good. Most will understand that children get ALL the germs, bugs & colds. And that children are very prone to coughing when snotty.
For me, colds, no. We’d be testing every bloody week. A minor cough associated with snot, nope. Feeling warm but no fever, nope. My youngest in particular often feels warm with a cold or teething but temp goes from 36.5 to 37. It’s just their little bodies not having full temperature regulation at a young age.
I do test for new continuous coughs, coughs I know sound unusual. My DD1 has cough dominant asthma & no way I’m testing her for every single coughing fit. I’m very aware what triggers her asthma & again, use my judgement. I would also test for an on-going fever & obviously if they complained their food didn’t taste of anything.
Also, it’s fine to send snotty kids into nursery. You’ll get people telling you not too on here but I don’t think they live in the real world where people are in full time employment & have to go out to work. If I didn’t send my snotty children, I may as quit my job. I’d never be in.
Rule of thumb- if your child is genuinely under the weather & not able to fully join in & enjoy a busy day at nursery, keep them home. It’s not fair to them or the nursery staff. If they are their normal selves, running around but just super snotty, totally fine!