Flu Scan for Sep 15, 2015

H5N1 outbreaks in Nigeria
Flu vaccine and febrile seizures

Nigeria reports 6 new H5N1 outbreaks involving 28,000 chickens

Nigeria reported six new outbreaks of highly pathogenic H5N1 avian flu affecting more than 28,000 chickens, bringing to 12 the number of outbreaks reported this month, according to separate reports filed yesterday with the World Organization for Animal Health (OIE).

One of the outbreaks is in Abuja, Nigeria's capital, which had not reported a previous outbreak this year. The rest are in Rivers state in the south, which has been hard hit by H5N1.

The Abuja outbreak began Sep 10 at a live-poultry market in Utako district, which is mainly residential, according to the first report. Of 800 broiler chickens, 400 died from the disease, and the rest will be culled to prevent further spread.

The chickens were sourced to an outbreak area in Kano state, and some were sold to the public, the report said. Officials have initiated other control measures such as control of poultry movement and disinfection of the market.

The outbreaks in Rivers involve 27,926 chickens on five farms ranging in size from 950 to 19,769 birds. All told, 4,244 chickens died on the five farms, and another 5,682 have been destroyed.

Nigerian health officials in the report said, "The birds were sourced from one of the infected states that is known for commercial eggs hatcheries" but did not specify the state. Two outbreaks began on Sep 3, two on Sep 4, and one on Sep 11. All are listed as resolved.

Nigeria has now reported 44 H5N1 outbreaks this year.
Sep 14 OIE report on Abuja outbreak
Sep 14 OIE
report on Rivers outbreaks


Study finds flu, pneumococcal vaccines not linked to febrile seizures

Neither the trivalent influenza vaccine (TIV) or the 13-valent pneumococcal conjugate vaccine (PCV13) were associated with an increase in fever-related seizures during the 2010-11 flu season, according to a study yesterday in Pediatrics.

US investigators used a self-controlled risk interval design to compare the rate of febrile seizures in a risk interval (0 to 1 day after vaccination) compared with a control interval (14 to 20 days after). They identified vaccinations via claims and immunization registry data and confirmed the seizures with medical records.

TIV was not associated with febrile seizures in unadjusted or adjusted models. PCV13 was significantly associated with the seizures, but not when the data were adjusted for concomitant TIV and diphtheria tetanus acellular pertussis-containing (DTaP) vaccines. TIV and PCV13 administered on the same day did not increase the risk, either.
Sep 14 Pediatrics abstract

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