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  • For Europe, US and Canada the Christmas/New Year season (end November thru 2nd week in January) may also be expected to change behaviors, so comparing with data before the first cases (Nov-Jan) may be tricky.
  • The measurements are from SLAC which shut down on March 17th, 2020, so the traffic on its links may have dramatically decreased after that.
  • Utilization across networks and services has changed dramatically in terms of volumes, number of connections, utilization of links, interfaces, service endpoints. Most services are scaling up to handle the load. There are also many outages due to misconfiguration as people are trying to configure with configurations in production.
  • The links from SLAC use the well-provisioned ESnet network and beyond that academic networks such as Internet2 in the US, GEANT in Europe, APAN in Asia, thus the measurements from SLAC may not be fully representative. 
  • Many of the targets are academic establishments that may have been closed, thus the target itself may be lightly loaded and so respond more quickly than in the past.

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  • Social distancing encouraged
  • Case-based measures
  • School closures
  • Public events banned
  • Lockdown
  • Interventions removed

Also, see See COVID 19 Internet Usage timeline for how companies have reduced their Internet traffic. Also see Akami sees 30 per cent surge in Internet traffic.

Statistics:

  • Number of days to double cases
  • Basic reproduction number R0 the average number of secondary infections produced by an infectious case where everyone is susceptible.
    • For R >1 each individual infected by a transmissible disease is expected to infect a number of individuals that increase exponentially. For R< R<1, each case transmit transmits the disease to less than one individual and the disease dies out.
  • Control reproductive number RC, the value of R in the presence of control measures.
  • Incubation period
  • Risk of importation
  • Proections Projections on: all beds needed, ICU beds needed, invasive ventilators needed.

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