We expect that more variants will continue to be detected as the virus circulates and evolves and as sequencing capacities are enhanced worldwide.
It’s even more critical we drive down and keep down transmission. @WHO#COVID19
As we have said, each variant identified needs to be properly assessed, which is why WHO established the Virus Evolution Working Group in June 2020, and why there is a Global Monitoring and Assessment Framework for #SARSCoV2 variants, coordinated by @WHO.
Re the report of variant from Vietnam: @WHO 🇻🇳 country office & @WHOWPRO are working w MOH 🇻🇳. The variant detected is B.1.617.2 with an additional mutation(s), but more info soon.
Remember: variants are constellations of mutations. Many VOI/VOC have similar mutations
3/ Let's take a closer look at location: studies show that the risk of #SARSCoV2 transmission is higher indoors compared to outdoors, and particularly risky in indoor settings with poor ventilation, especially where people spend long periods of time. #COVID19
Meta-analysis of 54 studies with 77 ,758 participants, the estimated mean secondary attack rate (SAR) for household contacts was 16.4% (95% CI, 13.4%-19.6%) & family contacts was 17.4% (95% CI, 12.7%-22.5%)
Household and family SARs were >3 times higher than for close contacts (4.8%; 95% CI, 3.4%-6.5%; P < .001)
The prevention, detection & control strategies & technical guidance that we develop are based on robust science, generated through extensive, collaborative research, & evaluated by a broad network of experts
@WHO works with scientists, clinical and public health professionals, people affected by public health challenges, across the world
Even if local areas can only focus on identifying symptomatic cases & isolate & care for them; trace & quarantine close contacts; you can eventually catch up on finding mild & asymptomatic cases because they will already be in quarantine.
2/“I think it's important that we express concern when there's concern, but I do think it's also important to express some hope, because with this particular pandemic and this virus – this virus is controllable,” Van Kerkhove said.
Van Kerkhove said she knows there is frustration about how long it takes to defeat the virus, and that some places aren’t seeing case numbers go down – but that it is important to keep perspective that it can change.
👉 No cases
👉 Sporadic cases
👉 Clusters of cases
👉 Community transmission
& for the following priority areas, we outline key actions & provide hyperlinks to full @WHO guidance for each.
➡️ Emergency response mechanisms
➡️ Risk Communication and community engagement
➡️ Contact tracing and management
➡️ Public health measures
➡️ Infection prevention and control in health care settings
➡️ Actions for the general public
➡️ Laboratory testing
➡️ Case management strategies
WHO: who.int/emergencies/me… “We believe that affected countries are reducing the global threat of #MERS through addressing knowledge gaps w/ regards to transmission, enhancing surveillance, and strengthening the ability to detect cases early & contain hospital outbreaks.” 2/4
"Although global efforts seem to have prevented hundreds of #MERS infections & deaths, vigilance must be maintained by all countries. More needs to be done to limit spillover infections from dromedaries, which requires stronger surveillance of dromedary populations and ... 3/4
"Health care professionals (HCP) & hospitals currently have tools to limit the extent & impact of outbreaks, which include early identification & isolation of suspect patients & strict adherence to standard IPC measures. These are the hallmark of effective #MERS-CoV control."
"A combination of interventions including the efficient triage of patients with res-piratory symptoms at hospital entry; limiting wait times and overcrowding in waiting areas; isolation of suspected and confirmed cases; appropriate use of droplet personal protection equipment..."
Infected dromedaries play an important role in #MERS-CoV transmission; prevention is key! If you have underlying medical conditions, avoid unprotected contact with dromedaries when visiting farms, markets, or barn areas where the virus is known to be potentially circulating...