https://www.medalerts.org/vaersdb/help/helpExpertMedDRA.php

"Another part of the MedDRA, which is available only in Expert Mode, is the ability to work with Standardized MedDRA Queries (SMQs). These are groups of Lower-Level Terms that have been deemed (by teams of physicians) to be part of "standard" medical concepts. Symptoms in a SMQ are defined as either "narrow" (symptoms that strongly indicate the SMQ) or "broad" (symptoms that may help to identify the SMQ but do not necessarily indicate the condition). There are only about 200 SMQs, which is far fewer than the number of symptoms in the MedDRA.

"For example, the Dementia SMQ has 110 narrow symptoms and 485 broad symptoms. This means that any of the 110 narrow symptoms (Creutzfeld-Jacob disease, Korsakov's syndrome, Senility, etc.) will strongly suggest that the patient has dementia, whereas the 485 broad symptoms could indicate dementia, but not necessarily.

"You can search for all VAERS cases that match a SMQ (either broadly or narrowly). Similarly, you can make tables or graphs of the SMQs (either broadly or narrowly) from your search results.

"It makes no sense to choose both a SMQ and a symptom term, because the search engine finds cases that match ALL requests. Therefore, if you choose a SMQ (which implies a particular set of symptom terms) and you also choose a symptom term, then only cases that satisfy both requests will be selected. If the chosen symptom term is not in the SMQ's list, then no VAERS cases will be found, whereas if the chosen symptom term is in the SMQ's list, then the selection of the SMQ is effectively ignored."

So, in completing the VAERS entry for this individual, the provider determined that the events fit certain symptom conditions, with some being broad fits for those symptoms and others being much narrower fits.

Also, the reason why this incident is not marked as "Life Threatening" is because the administration of the vaccine did not result in an immediate illness that immediately threatened the life of the child. This is question 21 of the VAERS form, as the option "Life threatening illness (immediate risk of death from the event)." The brief writeup for the vaccine administration given for the entry does not indicate in the narrative that the administration resulted in an immediate illness that immediately threatened the life of the child. She was vaccinated on Thursday evening. Got better, then went home Saturday. Sometime after 9PM on Sunday, three days afterwards, she stopped breathing. They attempted resuscitation on the way to the ER and pronounced that morning. This narrative would not indicate an immediate life threatening illness resulting from administration of the shot.