My wife and I completed our first backpacking adventure of the Summer July 12 to 19 in Yosemite. While passing through Tuolumne Meadows we needed to visit their store to replace non-functional water purifiers. It was crowded with maskless hikers stocking up and enjoying burgers at their grill. Exposure was on July 16 we believe. 4 - 5 days later Johane began to feel very sick, “like a cold with fatigue and headache” etc. Also lost her senses of taste and smell. I became sick 2 days after her. We both tested positive for COVID by this week.
Since we each have risk factors ( both over 65 and high BP. she with severe asthma and me with APC and pulmonary hypertension) we are going this morning to get the infusion of the double monoclonal antibody treatment. We anticipate full recovery eventually.
This is just a heads-up about breakthrough (after full immunization) infections with COVID in the fully vaccinated. Recent news out of the CDC is saying that this is very rare. Not so fast. Just yesterday Pfizer released a report on their research showing that neutralizing antibodies declines significantly by six months, from 98.5% to 83.6% (ish) after 2 dose vaccination. And that this may not be protective, especially for the Delta variant. Obviously our two simultaneous cases demonstrate this in spades. Pfizer suggested in their release that a booster shot may be required at six months after the first series. They indicated this produce 1100% (11 times) higher antibody levels than the primary series.
My take aways are: 1) Breakthrough COVID infections four to six months after vaccination will soon be found to be much more frequent than the CDC has been saying. 2) A booster shot six months after primary vaccination is a good idea, at least for the two mRNA vaccines, Moderna and Pfizer BioNtech. 3) Be very careful especially if it has been several months since vaccination.