---
title: ENVariantOfConcernType
framework: exposurenotification
role: symbol
role_heading: Enumeration
path: exposurenotification/envariantofconcerntype
---

# ENVariantOfConcernType

A set of user-definable types that indicate variants of concern.

## Declaration

```swift
enum ENVariantOfConcernType
```

## Overview

Overview A Public Health Authority (PHA) defines the meaning of the types that indicate variants of concern. For example, a PHA could define the meaning of ENVariantOfConcernType.type1 as “Vaccine is effective”, and ENVariantOfConcernType.type2 as “Highly transmissive.” The PHA could assign the definition of “High severity” to ENVariantOfConcernType.type3, and “Vaccine breakthrough” to ENVariantOfConcernType.type4.

## Topics

### User-Defined Types

- [ENVariantOfConcernType.type1](exposurenotification/envariantofconcerntype/type1.md)
- [ENVariantOfConcernType.type2](exposurenotification/envariantofconcerntype/type2.md)
- [ENVariantOfConcernType.type3](exposurenotification/envariantofconcerntype/type3.md)
- [ENVariantOfConcernType.type4](exposurenotification/envariantofconcerntype/type4.md)
- [ENVariantOfConcernType.typeUnknown](exposurenotification/envariantofconcerntype/typeunknown.md)

### Initializers

- [init(rawValue:)](exposurenotification/envariantofconcerntype/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Getting Window Properties

- [calibrationConfidence](exposurenotification/enexposurewindow/calibrationconfidence.md)
- [date](exposurenotification/enexposurewindow/date.md)
- [diagnosisReportType](exposurenotification/enexposurewindow/diagnosisreporttype.md)
- [infectiousness](exposurenotification/enexposurewindow/infectiousness.md)
- [scanInstances](exposurenotification/enexposurewindow/scaninstances.md)
- [variantOfConcernType](exposurenotification/enexposurewindow/variantofconcerntype.md)