# Vaccine Effectiveness Tracker

By Munawar Khel / Day One Technologies / 2017–22 / 1 min read

Published at https://munawarkhel.com/work/day1-technologies/vaccine-effectiveness-tracker/

Pitch, not delivered.

A public health reporting tool built during the COVID-19 vaccine rollout.

- Company: Day One Technologies
- Timeline: November 2017 – April 2022
- Platform: Mobile (iOS)
- Category: Public health, COVID-19, patient-reported outcomes
- Status: Pitch, not delivered

## The proposition

A public health reporting tool built during the COVID-19 vaccine rollout. Members of the public record which vaccine they received and how they are feeling afterwards, and **the severity of their answer determines how much the app asks for**. Mild reactions are captured in a single tap; serious ones escalate into a structured adverse-event report. The framing is civic rather than clinical: "Support the warriors by providing your valuable feedback."

## Design direction

Reassuring and non-clinical. A teal and cyan brand with generous white space, friendly flat illustration of health workers, and photorealistic 3D renders of vaccine vials, a syringe, and virus particles on the splash. The severity choice is expressed as three colour-coded faces rather than medical terminology, keeping a potentially anxious moment approachable.

## What was designed

- **Phone-number login** with a four-digit SMS verification step and a resend affordance
- **Vaccine selection**, choosing the dose received from a dropdown of named vaccines
- **Severity triage**, a three-way choice presented as green, amber, and red faces labelled Minor, Severe, and Serious
- **Symptom checklist** for the Severe path, covering fever or chills, cough, muscle or body aches, and headache
- **Full patient intake** for the Serious path, a multi-step form progressing across five stages and capturing name, address, country, city, state, zip, email, and phone
- **Confirmation state**, an illustrated thank-you modal closing the loop on submission

## What it demonstrates

A clean example of **progressive disclosure driven by risk**: the app asks almost nothing of a user with mild symptoms and escalates to a full structured report only when the answer warrants it. Also shows sensitive-context UX, turning a medical reporting task into something a nervous member of the public will actually complete.