News Scan for Aug 17, 2018

Cyclospora cases rise to 476
Polio in Afghanistan, Papua NG, Nigeria

Cyclospora outbreak tied to McDonald's salads sickens 40 more

The US Centers for Disease Control and Prevention (CDC) yesterday reported 40 more cases in a Cyclospora outbreak linked to McDonald's salads, pushing the illness total to 476.

Among the sick patients, the latest illness onset is Jul 20. The CDC notes that it can take 6 weeks between illness onset and when illnesses are reported in people infected with Cyclospora cayetanensis, the parasite that causes the disease.

One more patient was hospitalized, putting that number at 21. No deaths have been reported. The number of affected states remained at 15.

In late July, the US Food and Drug Administration (FDA) identified Cyclospora in a romaine lettuce and carrot salad mix distributed to McDonald's by a Fresh Express processor in Streamwood, Ill.  So far there's no evidence that the Cyclospora outbreak related to McDonald's salads is related to an earlier Cyclospora event connected to Del Monte fresh vegetable trays.

The FDA said yesterday that the investigation is ongoing and it is reviewing distribution and supplier information for romaine lettuce and carrots.
Aug 16 CDC update
Aug 16 FDA update


Polio cases reported in Afghanistan, Papua New Guinea, Nigeria

Afghanistan has a new case of wild poliovirus type 1 (WPV1) infection, while Papua New Guinea and Nigeria are reporting vaccine-derived polio cases, according to today's weekly update from the Global Polio Eradication Initiative (GPEI).

The WPV1 case in Afghanistan is in Kandahar province and involves onset of paralysis on Jul 17, the GPEI said. It pushes the number of WPV1 cases in the country to 11 this year. Officials also reported a WPV1-positive environmental sample in the same province.

In Papua New Guinea, a new case of circulating vaccine-derived poliovirus type 1 (cVDPV1) has been reported in Eastern Highland province, with onset of paralysis on Jul 8. The case is the same one reported earlier this week by the World Health Organization's Western Pacific regional office. The country has now recorded 4 such cases in 2018, with the others in Morobe (2 cases) and Enga (1) provinces. Officials are planning three more vaccination campaigns through October.

The case in Nigeria involves circulating vaccine-derived poliovirus type 2 (cVDPV2) in Katsina state. The patient first had paralysis symptoms on Jul 15. Nigerian officials also confirmed cVDPV2 in stool samples from a contact of a previously reported person in Yobe state who had acute flaccid paralysis indicative of polio.

"The country continues to be affected by two separate cVDPV2 outbreaks, the first centered in Jigawa state, and the second in Sokoto state," the GPEI said in its report. Nigeria has reported four cVDPV2 cases so far this year.
Aug 17 GPEI update

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