1,060 laboratory-confirmed listeriosis cases have been reported from 01 January 2017 to 17 July 2018. The number of new cases reported each week has decreased since the implicated products were recalled on 04 March 2018 with no new cases of listeriosis reported during the week prior to release of this sitrep (Figure 1). Neonates ≤28 days of age are the most affected age group (42%, 443/1 060), followed by adults aged 15 – 49 years of age (32%, 334/1 060) – Figure 2. Most cases have been reported from Gauteng Province (58%, 614/1 060), followed by Western Cape (13%, 136/1 060) and KwaZulu-Natal (8%, 83/1 060) provinces. Final outcome (i.e. death or discharge) is known for 76% (806/1 060) of total cases to date; 27% (216/806) with known outcome died.

Prior to 2017, an average of 60 to 80 laboratory-confirmed listeriosis cases per year (approximately 1 per week), were reported in South Africa. In July 2017, an increase in laboratory-confirmed cases of listeriosis was reported to National Institute for Communicable Diseases (NICD) which triggered further investigation. On 05 December 2017, the listeriosis outbreak was declared by the Minister of Health, Dr. Aaron Motsoaledi. The source of the outbreak was identified as ready-to-eat processed meat products manufactured at Enterprise Foods’ Polokwane production facility. A recall of affected products was initiated on 04 March 2018.

Full Report

NICD updated this Listeria Outbreak at the end of July.  Of note, the numbers of ill have continued to drop following the recall of Tiger Brands Enterprise Foods polony in March. However, it appears that some of the “recalled” product is still being consumed.  NICD’s partial report is below.

1,060 laboratory-confirmed cases have been reported from 01 January 2017 to 17 July 2018. The number of new cases reported each week has decreased since the implicated products were recalled on 04 March 2018 with no new cases of listeriosis reported during the week prior to release of this sitrep (Figure 1). Neonates ≤28 days of age are the most affected age group (42%, 443/1 060), followed by adults aged 15 – 49 years of age (32%, 334/1 060) – Figure 2. Most cases have been reported from Gauteng Province (58%, 614/1 060), followed by Western Cape (13%, 136/1 060) and KwaZulu-Natal (8%, 83/1 060) provinces (Table 1). Final outcome (i.e. death or discharge) is known for 76% (806/1 060) of total cases to date; 27% (216/806) with known outcome died.

Following a recall of the implicated products, the number of cases has steadily decreased. However, it is anticipated that cases could still be reported for the following reasons:

• The incubation period of listeriosis can be up to 70 days.
• The implicated products have a long shelf life and it is possible that despite the recall some products have not been removed from retail or consumer’s homes.
• Cross-contamination at retail and in the home can occur.

Post recall (05 March 2018 to date), all new cases of laboratory-confirmed listeriosis are contacted by IMT members, and a comprehensive food history is obtained. Exposure to food products implicated in the listeria outbreak is determined.

Of 87 post-recall cases, 65 have been interviewed to date.

Of those interviewed, 38/65 (58%) of ill people or their proxy reported consuming polony prior to their illness onset; brands manufactured by Tiger Brands Enterprise Foods were most commonly reported to have been consumed where brand of polony was known.

Prior to 2017, an average of 60 to 80 laboratory-confirmed listeriosis cases per year (approximately 1 per week), were reported in South Africa. In July 2017, an increase in laboratory-confirmed cases of listeriosis was reported to National Institute for Communicable Diseases (NICD) which triggered further investigation. On 05 December 2017, the listeriosis outbreak was declared by the Minister of Health, Dr. Aaron Motsoaledi. The source of the outbreak was identified as ready-to-eat processed meat products manufactured at Tiger Brand’s Enterprise Foods’ Polokwane production facility. A recall of affected products was initiated on 04 March 2018.

1,053 cases have been reported from 01 January 2017 to 20 June 2018. The number of new cases reported each week has decreased since the implicated products were recalled on 04 March 2018 (Figure 1). Neonates ≤28 days of age are the most affected age group, followed by adults aged 15 – 49 years of age (Figure 2). Most cases have been reported from Gauteng Province (58%, 613/1 053), followed by Western Cape (13%, 132/1 053) and KwaZulu-Natal (8%, 81/1 053) provinces (Table 1).

Prior to 2017, an average of 60 to 80 laboratory-confirmed listeriosis cases per year (approximately 1 per week), were reported in South Africa. In July 2017, an increase in laboratory-confirmed cases of listeriosis was reported to National Institute for Communicable Diseases (NICD) which was followed by investigations into the reported increase. On 05 December 2017, the listeriosis outbreak was declared by the Minister of Health, Dr. Aaron Motsoaledi. The source of the outbreak was identified as ready-to-eat processed meat products manufactured at Enterprise Foods’ Polokwane production facility. A recall of affected products was initiated on 04 March 2018.

1034 sick with 204 dead as of two weeks ago – this week 1038 sick with 208 dead.

NICD Listeria Situation Report Update:  1038 cases have been reported from 01 January 2017 to 22 May 2018. The number of new cases reported each week has decreased since the implicated products were recalled on 04 March 2018 (Figure 1). Neonates ≤28 days of age are the most affected age group, followed by adults aged 15 – 49 years of age (Figure 2). Most cases have been reported from Gauteng Province (58 %, 607/1038), followed by Western Cape (13%, 130/1038) and KwaZulu-Natal (7%, 76/1038) provinces (Table 1).

• The number of reported cases per week has decreased since the implicated products were recalled on 04 March 2018 with a total of 64 cases reported since 5 March 2018 (average 6.4 cases/week), whereas 249 cases were reported for the 10-week period prior to the recall (average 24.9 cases/week).
• Prior to 2017, an average of 60 to 80 laboratory-confirmed listeriosis cases per year (approximately 1 per week), were reported in South Africa. In July 2017, an increase in laboratory-confirmed cases of listeriosis was reported to National Institute for Communicable Diseases (NICD) which was followed by investigations into the reported increase. On 05 December 2017, the listeriosis outbreak was declared by the Minister of Health, Dr. Aaron Motsoaledi. The source of the outbreak was identified as ready-to-eat processed meat products manufactured at Enterprise Foods’ Polokwane production facility. A recall of affected products was initiated on 04 March 2018.

• 1 034 cases have been reported from 01 January 2017 to 16 May 2018. The number of new cases reported each week has decreased since the implicated products were recalled on 04 March 2018 (Figure 1). Neonates ≤28 days of age are the most affected age group, followed by adults aged 15 – 49 years of age (Figure 2). Most cases have been reported from Gauteng Province (59%, 606/1 034), followed by Western Cape (13%, 130/1 034) and KwaZulu-Natal (7%, 75/1 034) provinces (Table 1).

• All clinical isolates received at NICD are undergoing whole genome sequencing (WGS). A total of 543 clinical isolates have undergone WGS to date (Figure 1); 92% (499/541) belong to the sequence type 6 (ST6) outbreak strain, and the remainder belong to thirteen different sequence types.
• Listeriosis outbreak situation report draft _21May2018_final

Earlier this week the National Institute of Communicable Diseases (NICD) reported that 1019 Listeria illnesses with 199 deaths have been linked to Tiger Brands Enterprise polony.  Today, Tiger Brands provided to the public – through an announcement to its shareholders that it had confirmed the NICD’s findings the a specific type of Listeria – Listeria monocytogenes ST6 type – was found.

To Tiger Brands’ credit, it has been transparent with its test results.  Its transparency support of the NICD findings is hopeful for its customers that suffered as a result of the Listeria-tainted product.  Tiger Brands should be commended for its willingness to provide the results in a public forum.

Here is the Tiger Brands’ announcement in full:

Results of Independent Tests carried out in respect of the presence of Listeria monocytogenes ST6 type (“LST6”) Shareholders are referred to the SENS announcement issued by the Company on 5 March 2018, relating to an order issued by the National Consumer Commission for the Company to conduct a recall of certain identified Enterprise products. In that announcement, it was stated that in a batch of one of its products tested by the Company on 14 February 2018, the presence of the ST6 strain could not be confirmed and that the relevant samples had been sent to an external laboratory for the identification of the strain. The test results were received on 15 March 2018, but these had proved inconclusive and, as a result, the samples were sent for further re-testing.

The purpose of this announcement is to update shareholders on the results of the independent laboratory re-testing which was carried out in respect of the presence of LST6 in the above samples which were manufactured at the Enterprise Polokwane processing facility. On 24 April 2018, Tiger Brands received confirmation of the presence of LST6 in these samples. As reported previously, we have been actively engaging with the Department of Health and the National Institute of Communicable Diseases on our findings and will continue to collaborate with them on the actions taken to date to actively address our findings.

The Enterprise facilities in Polokwane, Pretoria and Germiston still remain closed while remedial work continues. An arrangement has been concluded between Pork Packers (which is based in Clayville) and our pig suppliers to contract slaughter on their behalf with effect from 2 May 2018.