Abstract: Methods of manufacture, devices, and systems are described for a nasal swab. The swab includes an elongated body having a distal end. The swab includes a collection layer proximate to the distal end of the elongated body. The collection layer has a first geometric layout and configured to collect samples in the nasal passageway. The swab includes a collection tip at the distal end of the elongated body, the collection tip having a second geometric layout and configured to collect samples in the nasal passageway. The first geometric layout is different from the second geometric layout.

Abstract: Magnetic field sensors are disclosed. Furthermore, a method for providing magnetic field sensors is disclosed. In one implementation, a magnetic field sensor includes a magnet and a magnetic field sensing element. In some implementations, the magnet at least partially surrounds the magnetic field sensing element. Specifically, in some implementations, the magnet includes a cavity defined by one or more surfaces of the magnet. In some implementations, the magnetic field sensing element is disposed in the cavity.