HB 1855 Missouri House · 2026 Regular Session

Creates provisions relating to disease surveillance conducted by the department of health and senior services

HB 1855 requires Missouri's Department of Health and Senior Services to add alpha-gal syndrome and Lyme disease to its list of noncommunicable diseases needing mandatory reporting. Healthcare providers must report most cases within seven days of a positive lab result, while labs must report alpha-gal syndrome cases using specific IgE test thresholds (≥0.1 IU/mL). The department must verify cases through random sampling and submit annual reports to the CDC on these diseases. This directly affects healthcare providers, laboratories, and public health officials responsible for disease surveillance in Missouri.

Issues: ✓ Healthcare

Bill status passed 3 of 5 stages cleared

Introduction

Dec 2025

Committee Review

May 2026

House Passage

Apr 2026

Senate Passage

Governor

Introduced Dec 1, 2025 Last action May 7, 2026

Maddy AI version diff · 2 comparisons

What changed between versions

House Committee Substitute → Perfected · 2 edits

MINOR

The bill was finalized and reclassified from a House Committee Substitute to a Perfected version, indicating it has passed all legislative stages. A key substantive change involves shifting the department of health and senior services' obligation regarding alpha-gal syndrome follow-up from a discretionary action ('may') to a mandatory requirement ('shall'), ensuring cases are actively investigated rather than left to optional funding decisions.

Scope change

The bill's scope regarding alpha-gal syndrome surveillance was strengthened by making the follow-up investigation process mandatory for the department of health and senior services.

REQUIREMENT

The department of health and senior services is now required to follow up on reported alpha-gal syndrome cases, changing the previous language which allowed them to do so only if funds were available.

TECHNICAL

The bill status was updated from 'House Committee Substitute' to 'Perfected' and the document identifier was updated from '4267H.04C' to '4267H.04P', reflecting its final legislative status.

Floor votes

How they voted

This bill passed the House by voice vote (no roll call recorded).

Full legislative history

Actions timeline

Total actions

Key actions

Committee

May 7, 2026

Upper · Passed

Reported Do Pass (S)

upper

May 7, 2026

Upper · Passed

Voted Do Pass (S)

upper

May 6, 2026

Committee

Referred: Fiscal Oversight(S)

upper

May 6, 2026

Upper · Passed

Reported Do Pass (S)

upper

May 5, 2026

Upper · Passed

Voted Do Pass (S)

upper

Apr 8, 2026

Committee

Second read and referred: Families, Seniors and Health(S)

upper

Apr 2, 2026

Lower · Passed

Third Read and Passed (H) - AYES: 125 NOES: 25 PRESENT: 0

lower

Mar 31, 2026

Lower · Passed

Reported Do Pass (H) - AYES: 7 NOES: 0 PRESENT: 0

lower

Mar 31, 2026

Lower · Passed

Voted Do Pass (H)

lower

Mar 26, 2026

Committee

Referred: Fiscal Review(H)

lower

Mar 25, 2026

Lower · Passed

Perfected with Amendments (H) - HA 1, adopted

lower

Mar 25, 2026

Lower · Passed

HCS Adopted (H)

lower

Mar 5, 2026

Lower · Passed

Reported Do Pass (H) - AYES: 12 NOES: 0 PRESENT: 0

lower

Mar 5, 2026

Lower · Passed

Voted Do Pass (H)

lower

Mar 2, 2026

Committee

Referred: Rules - Legislative(H)

lower

Feb 26, 2026

Lower · Passed

HCS Reported Do Pass (H) - AYES: 14 NOES: 0 PRESENT: 0

lower

Feb 26, 2026

Lower · Passed

HCS Voted Do Pass (H)

lower

Jan 29, 2026

Committee

Referred: Health and Mental Health(H)

lower

Dec 1, 2025

Introduced

Prefiled (H)

lower

1 primary · 18 co-sponsors