Title
Abines vs. Duque III
Case
G.R. No. 235891
Decision Date
Sep 20, 2022
Children vaccinated with Dengvaxia sought mandamus, alleging health risks; SC dismissed, citing policy discretion and lack of environmental claim.

Case Summary (G.R. No. 235891)

Background of the Dengvaxia Program

Sanofi’s tetravalent dengue vaccine, Dengvaxia, was approved by the FDA shortly after DOH Secretary Garin endorsed procurement of 3 million doses. The DOH secured a ₱3.5 billion Special Allotment Release Order and coordinated with the DILG for a school-based vaccination campaign in NCR, Regions III and IV-A. After initial rollout in early 2016, safety concerns prompted a suspension in July and subsequent expansion to Cebu. In November 2017, Sanofi issued new guidance restricting use only to those with prior dengue infection. The DOH and FDA suspended the program and distribution on December 1, 2017.

Petition and Procedural History

Petitioners filed a direct petition for continuing mandamus before the Supreme Court in December 2017, alleging violation of the constitutional right to health and accusing the DOH of using children as experimental “guinea pigs.” Respondents filed comments and the parties exchanged memoranda following the Court’s February 18, 2020 resolution. Petitioners sought orders compelling regular public reporting, further safety studies, central registry creation, and provision of free medical services and monitoring for all vaccinees.

Legal Standing and Doctrine of Hierarchy

The Court affirmed that the inoculated children have direct injury-in-fact thus sufficient standing. Private-citizen and legislator petitioners must still demonstrate specific injury beyond general public interest. The Court held that direct invocation of the Supreme Court’s original jurisdiction over mandamus is disfavored under the hierarchy of courts and requires exceptional, purely legal questions. Petitioners’ pleadings involved contested facts and administrative discretion, fitting lower courts’ competency and precluding direct Supreme Court relief.

Separation of Powers and Mandamus Limits

The Executive exercises health policy and program implementation under the Administrative Code, DepEd law and Local Government Code. The Judiciary cannot invade the Executive’s discretionary domain except upon clear grave abuse of discretion or lack of jurisdiction. Mandamus compels only ministerial duties clearly enjoined by law; it cannot direct agencies how to exercise expert judgment or supervise ongoing program administration.

Continuing Mandamus Requirements

Under Rule 8 of the Environmental Cases Rules, continuing mandamus lies only for enforcement of environmental laws or rights, requiring:
(a) unlawful neglect of a legally-enjoined duty;
(b) nexus to environmental law, rule or right;
(c) no other plain, speedy, adequate remedy; and
(d) factual showing of irreparable harm and specific, measurable, time-bound objec





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