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# ENVariantOfConcernType

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

```
enum ENVariantOfConcernType
```

## 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`](/documentation/ExposureNotification/ENVariantOfConcernType/type1) as “Vaccine is effective”, and [`ENVariantOfConcernType.type2`](/documentation/ExposureNotification/ENVariantOfConcernType/type2) as “Highly transmissive.” The PHA could assign the definition of “High severity” to [`ENVariantOfConcernType.type3`](/documentation/ExposureNotification/ENVariantOfConcernType/type3), and “Vaccine breakthrough” to [`ENVariantOfConcernType.type4`](/documentation/ExposureNotification/ENVariantOfConcernType/type4).

## Topics

### User-Defined Types

[`case type1`](/documentation/ExposureNotification/ENVariantOfConcernType/type1)

The first user-definable type for a variant of concern.

[`case type2`](/documentation/ExposureNotification/ENVariantOfConcernType/type2)

The second user-definable type for a variant of concern.

[`case type3`](/documentation/ExposureNotification/ENVariantOfConcernType/type3)

The third user-definable type for a variant of concern.

[`case type4`](/documentation/ExposureNotification/ENVariantOfConcernType/type4)

The fourth user-definable type for a variant of concern.

[`case typeUnknown`](/documentation/ExposureNotification/ENVariantOfConcernType/typeUnknown)

The unknown type for a variant of concern.

### Initializers

[`init?(rawValue: UInt32)`](/documentation/ExposureNotification/ENVariantOfConcernType/init(rawValue:))

## Relationships

### Conforms To

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`Sendable`](/documentation/Swift/Sendable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

---

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