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Influenza vaccination coverage is still low and there is still time this season to benefit from getting an annual influenza vaccine.Īvailable seasonal influenza vaccines in the United States provide protection against four different influenza viruses: A(H1N1)pdm09, A(H3N2), B/Victoria lineage, and B/Yamagata lineage viruses.
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CDC also is aware of influenza outbreaks in colleges and universities in several states. While influenza activity is still low overall nationally, an increase of influenza A(H3N2) viruses has been detected in recent weeks, with most of these infections occurring in young adults.
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Recent increases in influenza activity in many places in the United States could mark the beginning of the 2021-2022 influenza season in the United States. Everyday preventive actions include staying home when sick, covering coughs and sneezes, and washing hands often. Remind the public to use non-pharmaceutical interventions (NPI) or everyday preventive actions, in addition to getting a flu vaccine.Remind public health practitioners and clinicians to consider mitigation measures including antiviral post-exposure prophylaxis during influenza outbreaks in institutions (e.g., long-term care facilities, university dormitories) in the setting of co-circulation of SARS-CoV-2.In patients with suspected influenza, decisions about starting antiviral treatment should not wait for laboratory confirmation of influenza, however COVID-19 should be excluded if a rapid assay is available. Advise clinicians that antiviral treatment is recommended as early as possible for any patient with confirmed or suspected influenza who is: a) hospitalized b) at higher risk for influenza complications or c) developing progressive illness.Remind clinicians to consider testing for both influenza virus and SARS-CoV-2 in patients with influenza-like illness (ILI).Remind public health practitioners and clinicians to recommend and offer the current seasonal influenza vaccine to all eligible persons aged six months and older (Flu vaccine and COVID-19 vaccine can be given at the same visit).The purpose of this HAN Health Advisory is to The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory about increased influenza A(H3N2) activity that could mark the beginning of the 2021-2022 influenza season. Now my question is: Which way is used in real life? If exists what is the mysterious circuit M in my Figure 2 which gets rid of the the common-mode voltage? I’m asking this question because we are using instrumentation amplifiers often for strain gauges.Distributed via the CDC Health Alert Network But in this case obtaining common-mode voltage vcm = (v1+v2)/2= 0mV will not affect the output voltage since it is zero. In Figure 2 the same outputs from the same strain gauge goes into a mysterious circuit called M which converts v1 and v2 to v1’ and v2’ such as v1’= (v1-v2)/v and v2’=-(v1-v2)/2. If the inamp is not ideal and obtaining common-mode voltage vcm = (v1+v2)/2= 0.395mV will affect the output voltage since every non-ideal amplifier has common mode gain. Let’s say I measure v1 and v2 with respect to ground such as: v2=0.390mV and v1=0.400mV. For simplicity buffering part is not drawn and I'm assuming the signals are balanced with equal line impedance. In Figure 1 a strain gauge's outputs v1 and v2 is connected to an instrumentation amplifier’s inputs. Before posing the question the figures are about as follows: