G Kang Profile picture
May 26, 2021 17 tweets 3 min read Read on X
Bear with me.. About Luc Montagnier’s statements-
Well, apparently he did not say all vaccinated people will die in two years (Given human variation why 2? Not 1 or 6??). But he did say
New variants are created through selection imposed by antibodies made through vaccination 1/n
And he said
2.There will be much stronger infection by variants in vaccinated individuals due to antibody dependent enhancement
3.Massive vaccination is an enormous error, a medical mistake
NOT TRUE. Read on. 2/n
When we are infected or vaccinated we make antibodies in response to a whole virus or part of a virus. In viral infection, the body’s immune responses, including antibodies, shut down viral replication and we recover from infection. 3/n
In vaccination, the immune response that is made has nothing to fight immediately but we train the immune system to recognise the virus if and when it comes. Vaccination is preparedness/prevention. 4/n
In a small number of individuals, special, because they are immunocompromised (therefore not usually out & about to spread virus) it is possible that virus replication may be prolonged. In such (rare) cases there may be development of variants that escape the immune response. 5/n
Variants are many, but variants that escape immunity are few. As the virus spreads through populations & multiplies massively, the few variants that are more capable of escaping immunity that is induced by vaccines will make vaccines somewhat less effective. BUT....6/n
while this may be what we are currently seeing with B1.351 and B1.617.2, even there two doses of vaccines protect reasonably (data from Qatar and UK).
The only way to decrease variants is not to stop vaccination, but to increase it to stop virus circulation and replication! 7/n
We see from effectiveness and impact studies that vaccination reduces viral replication in individuals and decreases transmission in communities, effectively decreasing the overall viral load in the community and the world. 8/n
Clear and simple-if viruses are not replicating they cannot mutate and become new variants. Vaccinate to decrease viral replication and variants!! 9/n
Antibody dependent enhancement was a potential problem identified with COVID-19 vaccine development. From Barney Graham in Science. 2020 May 29;368(6494):945-946. doi: 10.1126/science.abb8923. 10/n Image
Essentially, instead of blocking virus from entering cells, non-neutralizing antibodies bind & increase ability to infect immune cells it usually can't get into, resulting in more virus replication, immune cell activation & secretion of cytokines that increase inflammation. 11/n
However, all vaccines are being evaluated to see that they make high amounts of neutralizing antibodies. And they are. 12/n
What about with variants because neutralizing antibodies to an older version of the virus might not be enough? This is analogous to the situation with dengue where it is not old and new versions of the virus but 4 different serotypes that may infect sequentially. 13/n
With repeat dengue infection, where low levels of antibodies from a first infection with 1 type of virus or vaccination can trigger enhanced/severe disease when a person does get subsequently infected with a type to which there is not good neutralizing antibody. 14/n
With SARS-CoV2 vaccines based on older virus/spike, the ability to neutralize new variants is lower but not absent. Vaccines seem to be working. A booster dose of old or new versions of mRNA vaccines have been shown to broaden the immune response, which is encouraging. 15/n
We need to continue to study long term protection, and particularly study immune response in vaccine break through cases to understand what is happening with immunity and safety. But reassuringly, so far there is no signal. 16/n
Massive vaccination being a mistake is a topic brought up with pseudo-scientific messy incorrect immunology that I have addressed previously, so I refer you to

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More from @GKangInd

Apr 23, 2023
COVID-19 back in the news for a while. In Delhi earlier this week, in addition to the Supreme Court, seemed every 2nd person knows someone who has recently tested positive. XBB.1.16 & its emerging sublineages are infecting the vaccinated & infected quite easily. 1/19
Yet, it appears that besides highlighting the numbers of cases and advising caution and preparedness exercises for hospitals, no other measures are being taken. Why? Restrict movement? Should we not mask? Give booster doses? 2/19
The confusion and nagging feeling that something is missing seems to bother many, including those in the medical field. My point of view follows (in case it is helpful), as always using a frame specifically for India. 3/19
Read 19 tweets
Dec 23, 2022
So many calls about China, about what that means for India, about XBB, about 3rd waves, about new mandates, about travel bans, about vaccine boosters- thought best to get views out to summarise the current situation. Long thread, be warned 🙂 1/n
Let's start with China. China is opening up fast at a time when their population has low levels of exposure to natural infection. The current circulating variants are Omicron, which have evolved in vaccinated populations and are therefore very infectious. 2/n
This means that China will have lots & lots of infections. Remember India's 100s or 1000s of cases in April-May 2021 and Jan 2022? In the absence of significant mitigations, this will be similar. Lots of infections lead to lots of sick people. 3/n
Read 31 tweets
Jan 23, 2022
A call from a 90 year diabetic uncle in Chennai who said he was advised admission to hospital and antibody treatment because he was in contact with someone who tested positive for SARS-CoV2 sparked this thread. 1/6
We know that 90% or greater infections are currently omicron in Indian cities. We know that the licensed monoclonal antibody products in India do not neutralise omicron. Yet doctors in private hospitals are prescribing monoclonal antibody therapy (and admission). 2/6
Please remember that even among clinical vulnerable, most contacts will stay asymptomatic or have mild symptoms & recover. Small no. develop severe illness (in India, we have little data so we do not know whether 5% or 20% of vaccinated elderly with omicron will progress). 3/6
Read 6 tweets
Aug 17, 2021
Thread in response to many questions about when we should start with booster doses.
Yes, some countries that have used inactivated, vectored vaccines or mRNA vaccines have begun to offer booster doses to selected populations, like the elderly. 1/9
In India (and elsewhere), we DO NOT have any data showing that anyone who has received two doses of vaccine needs booster vaccines at this time. 2/9
Yes, the Moderna and AZ correlates of protection analysis shows that higher antibodies correlate with better protection, BUT there is no cut-off level of antibodies which reliably predict protection at the individual levels. Antibodies good, but not all of immune response! 3/9
Read 9 tweets
Apr 15, 2021
@ajayhisar @IMAIndiaOrg @MoHFW_INDIA @AnantBhan @RemaNagarajan This is an important question. We know that most vaccines there is at least short-term pretty good protection. So if someone tests positive post-1st dose, it is more likely to be in the first 2-3 weeks before the protective immune response kicks in. 1/6
@ajayhisar @IMAIndiaOrg @MoHFW_INDIA @AnantBhan @RemaNagarajan The US CDC says to wait until you are no longer symptomatic or have completed isolation requirements and then take the second dose. 2/6
@ajayhisar @IMAIndiaOrg @MoHFW_INDIA @AnantBhan @RemaNagarajan WHO has no specific guidance for this situation (which I could find), but says okay for infected to wait up to 6 months before vaccination. Anyone getting antibody therapy advised to wait 90 days by WHO & CDC, bcoz passively given antibodies interfere with immune response. 3/6
Read 6 tweets
Jan 23, 2021
There is now more safety data on Pfizer and new data on Moderna. The risk of anaphylaxis with Pfizer's vaccine is less than originally calculated (earlier 11.1 now 6.2 per million). Moderna risk 2.1 per million.
Women still predominate. Most had history of anaphylaxis or very severe allergies. Median time 7.5 minutes, well within time people are asked to wait. CDC analysis comes after accumulating a fair amount of data (Jan 19, 15 Moderna and 45 Pfizer cases)
In India, a lot of news about adverse events in the media. System for monitoring is working, picking up adverse events, being well managed and this is reassuring. Caveat--we are still with health and essential workers and need to maintain this level for the future.
Read 5 tweets

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