Table Of Contents

The responsible person owns this feature from scoping to tracking development by Ona and providing clarifications if needed, to testing and sign off.  Status

Status

Definitions

A Potential Area of Transmission (PAOT) can be a variety of things:

• It can be in close proximity to a mosquito collection point, larval dipping site or a structure
• It can be within or outside of an operational area
• It can be a distinct thing next to a residential structure
• Identifying PSOTs  is part of the Thai protocol and is currently done on hand-drawn maps
• Dropping a point for or editing a potential Source of Transmission should not be restricted by GPS proximity (unlike interaction with other structures)

Requirements

1. OVERVIEW: A user should be able to add an icon (possibly similar to the image of Plasmodium Gametocyte below) to the Reveal Android map showing a Potential Area of Transmission (PAOT). 
2. FORM FIELDS: The user should be able to add a comment to the PAOT form (not mandatory) - maximum string size tbc (2000 chars? this should be the same as other comment fields in Reveal) specify the type of PAOT from a drop-down (list to be provided - 'Pond, Cave, Forest) (Pedro Pagalday Olivares to confirm this please)
3. FORM FIELDS: The comment field (task/form) should be editable 
4. REQUIREDNESS: It is not mandatory to add a PAOT to a focus
5. LIFECYCLE: The PAOT will persist across subsequent FI, but should be able to be removed (set to inactive) I.e. they do not expire
6. USAGE: The PAOT data should be synced to the Reveal WebUI and be visible in the Web UI maps (high priority)
7. USAGE: The PSOT data should be as a line listing reports (to be mocked up) (low priority)
8. USAGE: The PAOT should be synced to Biophics in the same way that other tasks are (high priority) - this is where the BVBD will analyse the data
9. PLANNING: The PAOT activity will not be part of a plan and no tasks for it will be created, all PSOT will be created ad hoc in the field
10. TASK STATUS: The PAOT can be coulored green as soon as it is created, with a status of 'Completed'
11. LINKAGE: One focus area can have multiple PAOTs
12. LINKAGE: The PAOT is associated to a focus area and not explicitly to an Index Case. This linkage can be assumed through the 1:1 mapping of focus area and index case per plan. However the PAOT is not necessarily related to the index or secondary cases in the focus i.e. it is A a potential area of transmission, not THE potential area of transmission for the cases in the focus at that time.
13. EDGE CASE: A PAOT is NEVER another type of structure, and if a structure is identified as a potential source then a PAOT should be added alongside the existing structure
    1. A potential issue raised is what happens with very large structures (Markets, football fields) as PAOT cannot be dropped on top of this - Vivek confirmed that this was discussed with BVBD and placing a pit next to the structure with a comment is sufficient

Mock-Ups

Adding a PAOT                                              PAOT Form

Views

We anticipate the following views to be impacted on with the creation of this feature:

• Android - Add structure form
• Android - Maps
• Android - New form
• Web - Maps

Justification

1. The Thailand BVBD has requested this feature:
   1. They need to be able to list the PAOT so that they can monitor them and potentially intervene (in active foci).
   2. It is important to be able to measure the most common PAOT in order to decide on intervention types to implement (inputs into epi research, SOPs and policy)

Dependencies

1. Data Dictionary completed
2. Icon produced

Notes

• Vivek - purpose: for targeted interventions, could visually see if there is a correlation of infection for more than one focus. they do this on paper at the moment. It is a critical piece of protocol for the Thai team.
• Was this mentioned in the initial first visit? To confirm with Pedro
• Data should be surfaced in web UI and pushed through to Biophics (not for this version though) 
• You need to be able to define an area of transmission as part of the focus investigation

Questions

1. This feature has been described as a Potential Source of Infection (POI) and a Potential Source of Transmission- which is correct?
   1. Confirmed by Vivek Agrawal as Potential Area of Transmission (PAOT)
2. Was this requirement mentioned during the initial first visit? To confirm with Pedro

Test Case