HomeMy WebLinkAboutRE_ Armstrong Elementary - Public Health IncidentHappy to help.
Ryan McLean
City of Diamond Bar | Assistant City Manager
t (909) 839-7016 | RMcLean@diamondbarca.gov <mailto:RMcLean@diamondbarca.gov>
From: Andrew Chou <AChou@DiamondBarCA.Gov>
Sent: Thursday, May 7, 2026 2:27 PM
To: Ryan McLean <RMcLean@DiamondBarCA.Gov>
Subject: Re: Armstrong Elementary - Public Health Incident
Thanks Ryan, this is very helpful.
Andrew Chou| Councilmember
City of Diamond Bar
21810 Copley Drive, Diamond Bar, CA 91765
Direct 909.839.7009 | Fax 909.861.3117
achou@diamondbarca.gov <mailto:achou@diamondbarca.gov> | www.DiamondBarCA.gov <http://www.diamondbarca.gov/>
________________________________
From: Ryan McLean
Sent: Thursday, May 7, 2026 2:24:53 PM
To: Council Mail
Cc: Dan Fox
Subject: Armstrong Elementary - Public Health Incident
Good afternoon Mayor Tye and Members of the City Council,
You may have heard some news about a public health incident at Armstrong Elementary School regarding a number of students suffering from an illness involving nausea, vomiting and other
related symptoms. I just spoke with Superintendent Knowles at Pomona Unified School District, and he was able to provide some updated information.
Starting yesterday afternoon, several Armstrong students began experiencing symptoms. Then this morning, many students called out of school sick or were otherwise sent home with symptoms
after arriving. Superintendent Knowles estimates that about half of the school’s 211 students are out as of this time. He is not sure how many are currently ill versus how many may
have decided to stay home or leave out of caution, but there is likely to be a significant number. PUSD has contacted Los Angeles County Department of Health to conduct contact tracing
and the investigation is ongoing. There is speculation that it is a form of norovirus, but that has not been confirmed, and I would not recommend sharing that speculation at this time.
LA County did not recommend that the school be temporarily closed and the District has dispatched cleaning crews and shared information with students and families about hand washing
and other ways to prevent the spread of viruses.
I will stay in touch with Mr. Knowles and provide updates as information becomes available.
<http://www.diamondbarca.gov/>
Ryan McLean | Assistant City Manager
City of Diamond Bar | City Manager’s Office
21810 Copley Drive, Diamond Bar, CA 91765
t (909) 839-7016 | 909.839.7000 main | f 909.861.3117
RMcLean@diamondbarca.gov <mailto:RMcLean@diamondbarca.gov> | www.DiamondBarCA.gov <http://www.diamondbarca.gov/>
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