Poliovirus found in 11 environmental samples across Karachi | Maqvi News

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Poliovirus detected in Hijrat Colony, Manzoor Colony Nallah environmental sample collection sites

A girl receives a polio vaccine during a three-day immunisation campaign on November 29, 2020. —Reuters
A girl receives a polio vaccine during a three-day immunisation campaign on November 29, 2020. —Reuters
  • Poliovirus detected in sample collected from Korangi Nullah.
  • Number of positive environmental samples for 2023 reaches 126.
  • Number of positive environmental samples for 2024 is 28.

ISLAMABAD: According to representatives of the Polio Eradication Initiative (PEI), on Saturday, 30 environmental samples that were taken from various cities throughout all four provinces of Pakistan were found to have wild poliovirus 1 (WPV1). Of these samples, 28 were collected in January 2024 and two in December 2023, The News reported.

11 out of the 30 samples were detected in different areas of Karachi such as four in district East, two each in districts Keamari and South, one each in district Central, Korangi and Malir.

“The Regional Reference Laboratory for Polio Eradication at the National Institute of Health Islamabad has confirmed the detection of Type-1 Wild Poliovirus (WPV1) in 30 environmental (sewage) samples. Five of these samples were collected from district Quetta; four from district Karachi East; two each from districts Karachi Keamari, Karachi South, Chaman and Peshawar; and one each from districts Lahore, Rawalpindi, Dera Ghazi Khan, Karachi Central, Karachi Korangi, Karachi Malir, Hyderabad, Jamshoro, Sukkur, Pishin, Kech, Nasirabad, and Khuzdar,” an official said.

In Quetta, environmental samples were collected from Jatak killi and Takhthani, Railway Pul, Surpul, Tawoosabad environmental sample collection sites. The isolated viruses are classified as YB3A clusters and 99.5% are genetically linked to the virus detected in an environmental sample in Kandahar (Afghanistan) on 21st May 2023.

In Khuzdar, the environmental sample was collected on 27th December 2023 from the ‘Katan Pul’ environmental sample collection site, which the first positive sample from District Khuzdar in 2023.

Wild poliovirus was also detected in the sewage from Rawalpindi’s ‘Dhok Dalal’, Dera Ghazi Khan’s Main Disposal, Lahore’s Outfall Station-G environmental sample collection sites. The isolated virus is classified as an ‘ORPHAN’ YB3A cluster and 98.34% genetically linked to the virus detected in an environmental sample in Jalalabad (Afghanistan) on 2nd April 2023. In Karachi East, the environmental samples were detected from the Sohrab Goth, Machar Colony, Rashid Minhas Road, Chakora Nullah environmental sites,

Similarly in Keamari, poliovirus was detected in the sewage of Orangi Nala and Muhammad Khan Colony and in Karachi South, poliovirus was found in Hijrat Colony and Manzoor Colony Nallah environmental sample collection sites. In Karachi Central, poliovirus was found in the sewage sample collected from Haji Mureed Goth.

In Korangi district of Karachi, poliovirus was found in the environmental samples collected from Korangi Nullah while in Malir, poliovirus was found in the sewage from Landhi Bakhtawar Village Colony.

In Jamshoro, poliovirus was found from the sewage sample collected from Drain KB Feeder while in Hyderabad, poliovirus was found from the Latifabad Pumping Station environmental sample collection site. In Sukkur, poliovirus was detected in sewage samples collected from Makka Pumping Station environmental sample collection site.

In Chaman, poliovirus was detected in environmental samples from Army Kaziba and Hadi Packet environmental sample collection sites while in Pishin, poliovirus was detected from Turwa environmental sample collection site. In Kech, poliovirus was detected in sewage from Turbat Town environmental sample collection site. In Kech, poliovirus was found in sewage sample collected from Wapda Colony environmental sample collection site.

In Peshawar, poliovirus was detected from Naray Khuwar Palosi Pul and Shaheen Town environmental sample collection sites.

The two new detections bring the total number of positive environmental samples for 2023 to 126. While the total number of positive environmental samples for 2024 is 28.

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